McqMate
| 101. |
A hermophrodite caliper is |
| A. | Has one leg bent and other straight with a sharp point |
| B. | Has parallel legs |
| C. | Outside caliper |
| D. | Inside caliper |
| E. | Divider |
| Answer» D. Inside caliper | |
| 102. |
In EDM, the tool and work piece are separated by |
| A. | A metal conductor |
| B. | Negative ions |
| C. | Dielectric fluid |
| D. | Positive ions |
| E. | An electrolyte |
| Answer» C. Dielectric fluid | |
| 103. |
The process of increasing the cross-section of a job with a reduction in its length is termed |
| A. | Upsetting |
| B. | Parting off |
| D. | Drawing out |
| E. | Cutting |
| Answer» A. Upsetting | |
| 104. |
Range of forging temperature for a mould steel job is |
| A. | 940?C - 1180?C |
| B. | Parting off |
| D. | 800?C - 1150?C |
| E. | 750?C - 1300?C |
| Answer» E. 750?C - 1300?C | |
| 105. |
Which of the following operation cannot be carried out on a lathe machine? |
| A. | Taper turning |
| B. | Blanking |
| C. | Double start screw cutting |
| D. | Facing |
| E. | Knurling |
| Answer» B. Blanking | |
| 106. |
Accuracy is |
| A. | The repeatability of a measuring process |
| B. | Error of judgment in recording an observation |
| C. | The ability of an instrument to reproduce same reading under identical situations |
| D. | Agreement of the result of a measurement with the true value of the measured quantity |
| E. | None of the above |
| Answer» D. Agreement of the result of a measurement with the true value of the measured quantity | |
| 107. |
A tool has tool signature 15, 15, 10, 10, 15, 10, (3 mm). Which of the following angle is not of 15?? |
| A. | Cutting edge angle |
| B. | Parting off |
| C. | Side rake angle |
| D. | End relief angle |
| E. | Back rake angle |
| Answer» D. End relief angle | |
| 108. |
A rolling mill is specified by |
| A. | width of rolls |
| B. | pressure exerted |
| C. | gross weight |
| D. | roll diameter |
| E. | Parting off |
| Answer» D. roll diameter | |
| 109. |
Which of the following is not a squeezing process? |
| A. | Riveting |
| B. | Thread rolling |
| C. | Coining |
| D. | Trimming |
| E. | Knurling |
| Answer» D. Trimming | |
| 110. |
The gold point temperature is |
| A. | 569?C |
| B. | 863?C |
| C. | 100?C |
| D. | 1000?C |
| E. | 1063?C |
| Answer» E. 1063?C | |
| 111. |
Tungsten carbide tipped drill bits are used |
| A. | For smooth surface |
| B. | For slow drilling |
| C. | For drilling on glass, ceramics, etc. |
| D. | Low power consumption |
| E. | For drilling without coolant |
| Answer» C. For drilling on glass, ceramics, etc. | |
| 112. |
While grinding the increase in wheel speed, with constant feed rate, results in |
| A. | glazing of wheel |
| B. | reduction of the chip size |
| C. | Parting off |
| D. | abrasive marks on work piece |
| E. | shining surface |
| Answer» B. reduction of the chip size | |
| 113. |
Which of the following chucking device can be used on lathe? |
| A. | Dog carrier |
| B. | Face plate |
| C. | Collets |
| D. | Mandrel |
| E. | All of the above |
| Answer» E. All of the above | |
| 114. |
The limitation of a pneumatically operated automatic control system |
| A. | is complexity of components |
| B. | is costly maintenance |
| C. | Suffers from the transmission lags and slow response |
| D. | None of the above |
| E. | All of the above |
| Answer» C. Suffers from the transmission lags and slow response | |
| 115. |
Unequal lengths of lips of a twist drill are likely to result in |
| A. | Smooth surface |
| B. | Low power consumption |
| C. | Low heat generation |
| D. | Elliptical hole |
| E. | Oversize hole |
| Answer» E. Oversize hole | |
| 116. |
A cutting tool fails due to |
| A. | crater wear and flank wear |
| B. | crater formation |
| C. | Parting off |
| E. | crater wear and flank wear meeting to cause crumbling of cutting edge |
| Answer» E. crater wear and flank wear meeting to cause crumbling of cutting edge | |
| 117. |
Presence of oxygen in copper |
| A. | gives it yellow colour |
| B. | generates blisters on the surface |
| C. | makes it harder |
| D. | Parting off |
| E. | increases electrical conductivity |
| Answer» C. makes it harder | |
| 118. |
Which of the following defect in castings is caused by the molten metal? |
| A. | Scab |
| B. | Swell |
| C. | Shrinkage |
| D. | Blowholes |
| E. | All of the above |
| Answer» B. Swell | |
| 119. |
Flywheel is not provided in case of |
| A. | manually operated presses |
| B. | crank type presses |
| C. | hydraulic presses |
| D. | All of the above |
| E. | Parting off |
| Answer» C. hydraulic presses | |
| 120. |
Internal gears and splines used in automobile industry are manufactured by |
| A. | Broaching |
| B. | Gears shaping |
| C. | Casting |
| D. | Milling |
| E. | Gears hobbing |
| Answer» A. Broaching | |
| 121. |
Honing is used to |
| A. | correct ovality |
| B. | waviness of axis |
| C. | non-parallelism of cylindrical features |
| D. | All of the above |
| E. | Parting off |
| Answer» D. All of the above | |
| 122. |
Which one of the following is not a angle measuring device? |
| A. | Angle iron |
| B. | Angle gauge blocks |
| C. | Combination square |
| D. | Bevel protector |
| E. | Signal bar |
| Answer» A. Angle iron | |
| 123. |
In hot blast cupola |
| A. | Temperature is high |
| B. | Melting rate is high |
| C. | Carbon percentage in castings is high |
| D. | Air supplied is preheated |
| E. | None of the above |
| Answer» D. Air supplied is preheated | |
| 124. |
Which property of sand is measured by a dilatometer? |
| A. | Clay content |
| B. | Permeability |
| C. | Hot strength |
| D. | Fineness |
| E. | Moisture content |
| Answer» C. Hot strength | |
| 125. |
The coolant generally used while machining with carbide tools is |
| A. | Water |
| B. | Compressed air |
| C. | Graphite |
| D. | Kerosene |
| E. | Soluble oil |
| Answer» E. Soluble oil | |
| 126. |
Loam moulds are |
| A. | Used for symmetrical castings |
| B. | Used in centrifugal castings |
| C. | Used for very small articles |
| D. | Made out of wet sand and then skin dried |
| E. | Used for large castings |
| Answer» E. Used for large castings | |
| 127. |
A thin tube is to be cut by hacksawing. Blades with following TPI are available which blade will be appropriate for the job |
| A. | 14 TPI |
| B. | 4- TPI |
| C. | 18 TPI |
| D. | 32 TPI |
| E. | 20 TPI |
| Answer» D. 32 TPI | |
| 128. |
The function of a transducer is |
| A. | To decodify the input signal |
| B. | To convert the primary signal into a more useful quantity usually an electrical impulse |
| C. | To amplify the input signal |
| D. | To codify the input signal |
| E. | To modify the input signal |
| Answer» B. To convert the primary signal into a more useful quantity usually an electrical impulse | |
| 129. |
Flange wrinkling is a defect associated with |
| A. | Cold heating |
| B. | Cold rolling |
| C. | Deep drawing |
| D. | Die casting |
| E. | None of the above |
| Answer» C. Deep drawing | |
| 130. |
Low helix drills are used for machining |
| A. | Brass |
| B. | bronze |
| C. | bakelite |
| D. | Any of the above |
| E. | Parting off |
| Answer» D. Any of the above | |
| 131. |
During continuous chip formation the maximum heat is taken away by |
| A. | Depends on velocity of cutting |
| B. | Chip |
| C. | Tool |
| D. | Work piece |
| E. | Coolant |
| Answer» A. Depends on velocity of cutting | |
| 132. |
Folding of edges of the sheet metal is done to |
| A. | Parting off |
| B. | To make the product stronger |
| C. | To make the product attractive |
| D. | Strengthen the edges and eliminate the sharp edges |
| Answer» D. Strengthen the edges and eliminate the sharp edges | |
| 133. |
Poor surface finish and fast wear of tool are the characteristics of |
| A. | Continuous chips with built up edges |
| B. | Discontinuous chips |
| C. | Inhomogencous chips |
| D. | Low power consumption |
| E. | Continuous chips |
| Answer» A. Continuous chips with built up edges | |
| 134. |
In a Brinell hardness test the hardness number is determined by the measurement of |
| A. | Width of depression |
| B. | Depth of depression |
| C. | Diameter of depression |
| D. | Surface area of depression |
| E. | None of the above |
| Answer» D. Surface area of depression | |
| 135. |
Post cleaning is done in case of brazed joints to |
| A. | Prevent corrosion |
| B. | Remove scale |
| C. | Strengthen the joint |
| D. | Increase the strength of the joint |
| E. | All of the above |
| Answer» A. Prevent corrosion | |
| 136. |
For cutting sheet metal the chisel cutting edge is bevelled to an angle of |
| A. | 90? |
| C. | 40? - 45? |
| D. | 30? - 60? |
| E. | Parting off |
| Answer» C. 40? - 45? | |
| 137. |
Core prints are |
| A. | Impressions left on cores during core making |
| B. | Hard surfaces on cores mainly meant for resisting deformation |
| C. | Blue prints for core manufacturing |
| D. | Holes or recesses in core meant for locating cores in position |
| E. | None of the above |
| Answer» D. Holes or recesses in core meant for locating cores in position | |
| 138. |
The most commonly used instrument for the measurement of mass or volume of flowing fluids in industrial plants are |
| A. | Impeller type |
| B. | Propeller type |
| C. | Turbine type |
| D. | Weight belt type |
| E. | Any of the above |
| Answer» E. Any of the above | |
| 139. |
During arc welding if the current is too low, it is likely to result in |
| A. | Poor penetration |
| B. | Excess piling up of weld metal |
| C. | Excessive electrode consumption |
| D. | All of the above |
| E. | None |
| Answer» D. All of the above | |
| 140. |
The disadvantage of die casting process is |
| A. | Cost is less |
| B. | Surface finish is poor |
| C. | Heavy section can be easily cast |
| D. | High production rates are not possible |
| E. | Only certain non-ferrous alloys can be cast economically |
| Answer» E. Only certain non-ferrous alloys can be cast economically | |
| 141. |
Which of the following provides an additional projection on a pattern and also forms a seat to support and locate the core in the mould? |
| A. | Head |
| B. | Mould print |
| C. | |
| D. | Check |
| E. | Core print |
| Answer» E. Core print | |
| 142. |
Aluminium gears are generally used in |
| A. | Compressors |
| B. | Speed reducers |
| C. | Instruments |
| D. | Worm wheels |
| E. | None of the above |
| Answer» C. Instruments | |
| 143. |
While machining copper alloys by electro chemical machining the electrolyte used is |
| A. | Sodium chlorate |
| B. | Sodium hydroxide |
| C. | Sodium sulphate |
| D. | Common salt |
| E. | Sodium nitrate |
| Answer» C. Sodium sulphate | |
| 144. |
Which of the following is relatively a low temperature brazing process? |
| A. | Brass brazing |
| B. | Silver manganese brazing |
| C. | Copper brazing |
| D. | Nickel chrome brazing |
| E. | Silver brazing |
| Answer» E. Silver brazing | |
| 145. |
In electrical resistance welding when the current passes through the metal, the greatest resistance is |
| A. | At the surface |
| B. | Through the metals to be welded |
| C. | At the point of contact of the metal to be welded |
| D. | At the point where electrode contacts the metal |
| E. | None of the above |
| Answer» C. At the point of contact of the metal to be welded | |
| 146. |
The material for worm wheels is usually |
| A. | Bronze |
| B. | Cast iron |
| C. | Copper |
| D. | Aluminium |
| E. | Cast steel |
| Answer» A. Bronze | |
| 147. |
In die casting process |
| A. | The cost of dies is generally insignificant |
| B. | Very high production rates are possible |
| C. | Any size of casting can be prepared |
| D. | Any metal can be cast |
| E. | Dimensional accuracy is immaterial |
| Answer» B. Very high production rates are possible | |
| 148. |
For resistance welding |
| A. | Voltage is low and current is high |
| B. | Voltage is high and current is low |
| C. | Both voltage and current are high |
| D. | Both voltage and current are low |
| E. | None of the above |
| Answer» A. Voltage is low and current is high | |
| 149. |
Teeth of a hacksaw are |
| A. | In a single plane |
| B. | Parting off |
| C. | Bent in one direction only |
| D. | Bent alternately in opposite directions |
| Answer» D. Bent alternately in opposite directions | |
| 150. |
Die casted gears are generally used in |
| A. | Counters |
| B. | Toys |
| C. | Cameras |
| D. | Any of the above |
| E. | None of the above |
| Answer» D. Any of the above | |
| 151. |
In gas welding the maximum flame temperature occurs at |
| A. | Inside the inner cone |
| B. | The inner cone |
| C. | Next to the inner cone |
| D. | The outer cone |
| E. | The tip of the flame |
| Answer» C. Next to the inner cone | |
| 152. |
Silicon steel is used for |
| A. | Ball bearings |
| B. | Boiler plates |
| C. | Industrial knives |
| D. | Dies |
| E. | Electrical stampings |
| Answer» E. Electrical stampings | |
| 153. |
The efficiency of abrasive particles depends up |
| A. | purity |
| B. | uniformity in composition |
| C. | hardness |
| D. | All of the above |
| E. | Parting off |
| Answer» D. All of the above | |
| 154. |
The hardness of martensite in quenched plain carbon steels reaches almost a saturation value of carbon of about |
| A. | 0.20% |
| B. | 0.40% |
| C. | 0.60% |
| D. | 1.40% |
| E. | None of the above |
| Answer» C. 0.60% | |
| 155. |
In centreless grinding the work piece advances by |
| A. | Force exerted by regulating wheel |
| B. | Remains stationalry |
| C. | Hydraulic force |
| D. | Force exerted by grinding wheel |
| E. | Push given by operator |
| Answer» A. Force exerted by regulating wheel | |
| 156. |
The power consumption in ultrasonic machining in kW/m2/min is of the order of |
| A. | 200 kW/m3/min |
| B. | 1000 kW/m3/min |
| C. | 1 kW/m3/min |
| D. | 10 kW/m3/min |
| E. | 100 kW/m3/min |
| Answer» D. 10 kW/m3/min | |
| 157. |
Shell sands are coated with |
| A. | molasses |
| B. | urea formaldehyde |
| C. | carbon disulphide |
| D. | Parting off |
| E. | silica grains |
| Answer» B. urea formaldehyde | |
| 158. |
A very soft whisper may have noise level of |
| A. | About 100 db |
| B. | About 140 db |
| C. | About 30 db |
| D. | About 40 db |
| E. | About 10 db |
| Answer» C. About 30 db | |
| 159. |
The width of slot eut by a hack-saw blade is |
| A. | None of these |
| B. | Less than the width of blade |
| C. | Slightly more than the width of blade |
| D. | Equal to the width of blade |
| E. | 1830 rpm |
| Answer» C. Slightly more than the width of blade | |
| 160. |
Swell is a defect in castings due to |
| A. | Enlargement of the mould cavity by metal pressure causing partial or overall enlargement of the casting |
| B. | Working on cooling |
| C. | Moisture in moulding sand |
| D. | Thin projection of casting due to gap between flasks |
| E. | Mis-mathcing of mould at the parting line |
| Answer» A. Enlargement of the mould cavity by metal pressure causing partial or overall enlargement of the casting | |
| 161. |
In EDM the material of the tool is |
| A. | Carbide |
| B. | Copper |
| C. | Satellite |
| D. | Diamond |
| E. | High speed steel |
| Answer» B. Copper | |
| 162. |
In a centre lathe gear box for changing spindle speeds the provision for speeds is made in |
| A. | Arithmetical progression |
| B. | Geometrical progression |
| C. | Cubical progression |
| D. | Random members |
| E. | Square progression |
| Answer» B. Geometrical progression | |
| 163. |
In rubber bond for grinding wheels, sulphur is added to |
| A. | Parting off |
| B. | act as vulcanising agent |
| C. | reduce shocks and vibrations |
| D. | make the bond flexible |
| E. | dissipate heat during grinding operation |
| Answer» B. act as vulcanising agent | |
| 164. |
Profile of a gear tooth is to be checked. Which one of the following device would you choose? |
| A. | Sine bear |
| B. | Optical projector |
| C. | Optical pyrometer |
| D. | Bench micrometer |
| E. | Telescopic gauge |
| Answer» B. Optical projector | |
| 165. |
A chisel is used for |
| A. | Cutting the wood |
| B. | Planing the wood |
| C. | Making holes in the wood |
| D. | None of the above |
| E. | Parting off |
| Answer» A. Cutting the wood | |
| 166. |
Chips with built up edge are produced while machining |
| A. | Non-ferrous materials |
| B. | Cast materials |
| C. | Hard materials |
| D. | Brittle material |
| E. | Ductile material |
| Answer» E. Ductile material | |
| 167. |
Discontinuous or segmental chips are formed while machining |
| A. | Mild steel |
| B. | Brass |
| C. | Carbon steel |
| D. | Alloy steel |
| E. | Cast iron |
| Answer» E. Cast iron | |
| 168. |
Which of the following is a single point cutting tool? |
| A. | Milling cutter |
| B. | File |
| C. | Grinding wheel |
| D. | Parting tool |
| E. | Hacksaw blade |
| Answer» D. Parting tool | |
| 169. |
While using cemented carbide tipped tools on aluminium, the cutting speed could be |
| A. | 100 - 300 m/min |
| B. | 1000 m/min |
| C. | 20 - 50 m/min |
| D. | 300 - 900 m/min |
| E. | 50 - 100 m/min |
| Answer» D. 300 - 900 m/min | |
| 170. |
A silver point is |
| A. | The temperature of equilibrium between solid silver and liquid silver at normal atmospheric pressure |
| B. | The pointed location spot silver plated |
| C. | The temperature of equilibrium between liquid silver and silver vapour at normal atmospheric pressure |
| D. | The point on a instrument dial reading beyond which may be dangerous for the system |
| E. | The temperature at which silver melts |
| Answer» A. The temperature of equilibrium between solid silver and liquid silver at normal atmospheric pressure | |
| 171. |
In order to avoid unscrewing while on a bicycle the shaft or the right padel is screwed in with |
| B. | Right hand thread |
| D. | Left hand thread |
| E. | Hysteresis |
| Answer» D. Left hand thread | |
| 172. |
The Roman notation DCCCC represents |
| A. | 900 |
| B. | 440 |
| C. | 340 |
| D. | 90 |
| E. | 140 |
| Answer» A. 900 | |
| 173. |
During arc welding eyes need to be protected against |
| A. | Microwaves |
| B. | Infrared and ultraviolet rays |
| C. | Intense glare |
| D. | X-rays and gamma rays |
| E. | High frequency waves |
| Answer» D. X-rays and gamma rays | |
| 174. |
In EDM the number of discharges perminute may be as high as |
| A. | 3000 |
| B. | 6000 |
| C. | 6,000,000 |
| D. | 60,000 |
| E. | 600,000 |
| Answer» E. 600,000 | |
| 175. |
Undercutting is |
| A. | An operation of cutting deep grooves |
| B. | None of above |
| C. | An operation of cutting a groove next to a shoulder on a piece of work |
| D. | An operation of cutting extra wide threads |
| E. | Cutting from the base of a work piece |
| Answer» C. An operation of cutting a groove next to a shoulder on a piece of work | |
| 176. |
The minimum section thickness for cast iron castings is |
| A. | 10 mm |
| B. | Parting off |
| C. | 3 mm |
| D. | 1 mm |
| E. | 6 mm |
| Answer» C. 3 mm | |
| 177. |
When large number of components are turned and parted off from a bar, the chuck used is |
| A. | Magnetic chuck |
| B. | Four jaw chuck |
| C. | Collet chuck |
| D. | Face place |
| E. | Three jaw chuck |
| Answer» C. Collet chuck | |
| 178. |
Which of the following plate can be used for milling the sides of a hexagon nut? |
| A. | Parting off |
| B. | 3 hole circle plate |
| C. | 45 hole circle plate |
| D. | 55 hole circle plate |
| E. | 24 hole circle plate |
| Answer» E. 24 hole circle plate | |
| 179. |
Stub tooth are cut on gears |
| A. | To improve transmission efficiency |
| B. | To reduce centre distance between shafts |
| C. | None of above |
| D. | To reduce frictional torque |
| E. | Subjected to shock and vibration |
| Answer» E. Subjected to shock and vibration | |
| 180. |
Porosity of a welded joint may be caused by |
| A. | Poor base metal |
| B. | Low welding current |
| C. | High welding current |
| D. | Wrong size of electrode |
| E. | None of the above |
| Answer» A. Poor base metal | |
| 181. |
Ionised material acts as transfer media in case of |
| A. | Ion beam machining |
| B. | Plasma arc machining |
| C. | Electro discharge machining |
| D. | All of the above |
| E. | None of the above |
| Answer» D. All of the above | |
| 182. |
Scale sensitivity is defined as |
| A. | Ratio of a change in scale reading to the corresponding change in pointer deflection |
| B. | Least reading of scale/range of scale |
| C. | Least reading of scale/unit measurable quantity |
| D. | Least count of scale/range of scale |
| E. | None of the above |
| Answer» A. Ratio of a change in scale reading to the corresponding change in pointer deflection | |
| 183. |
Which one does not fit with the rest in the following |
| A. | Hammer |
| B. | Flatter |
| C. | Hot chiesel |
| D. | Reamer |
| E. | Hot punch |
| Answer» D. Reamer | |
| 184. |
Kerosene is used as a cutting fluid while machining |
| A. | Magnesium |
| B. | Low carbon steel |
| C. | Copper |
| D. | Brass |
| E. | Aluminium |
| Answer» E. Aluminium | |
| 185. |
Out of the following tools which one is expected to have highest carbon percentage |
| A. | Crowbar |
| B. | Ordinary file |
| C. | Circular saw |
| D. | Pliers |
| E. | Wrenches |
| Answer» B. Ordinary file | |
| 186. |
For welding of non-ferrous materials which of the following is preferred? |
| A. | Microwave frequency voltage |
| B. | Low frequency ac |
| C. | High frequency ac |
| D. | Direct current |
| E. | Induction heating |
| Answer» D. Direct current | |
| 187. |
As far as machinability is concerned, which of the following will be considered to be most inferior alloy? |
| A. | Malleable cast iron |
| B. | Parting off |
| C. | Monel metal |
| D. | Gun metal |
| E. | Bearing bronze |
| Answer» C. Monel metal | |
| 188. |
Precision is |
| A. | The ability of a measuring device to detect small differences in a quantity being measured |
| B. | Agreement of the result of a measurement with the true value of the measured quantity |
| C. | The ability of an instrument to reproduce same reading under identical conditions |
| D. | The repeatability of a measurement process |
| E. | Error of judgment in reading on observation |
| Answer» D. The repeatability of a measurement process | |
| 189. |
In centrifugal castings, the cores are generally made of |
| A. | Green sand and molasses |
| B. | Plastic |
| C. | Wax |
| D. | Cores are not used |
| E. | Plaster of paris |
| Answer» D. Cores are not used | |
| 190. |
In orthogoual cutting of metals the cutting edge is |
| A. | Perpendicular to the direction of tool travel |
| B. | Perpendicular to the work piece |
| C. | Perpendicular to the shear plane |
| D. | Perpendicular to the axis of cutting tool |
| E. | None of the above |
| Answer» A. Perpendicular to the direction of tool travel | |
| 191. |
Hardest abrasive is |
| A. | Aluminium oxide |
| B. | Silicon carbide |
| C. | Boron carbide |
| D. | Diamond |
| E. | Tungsten oxide |
| Answer» D. Diamond | |
| 192. |
Riser is generally located |
| A. | near the parting line |
| B. | on the upper most section of the casting |
| C. | Parting off |
| D. | opposite to the pouring end |
| E. | near the deepest section of the mould |
| Answer» B. on the upper most section of the casting | |
| 193. |
Which of the following test can be used to detect surface cracks in the welding of non-magnetic alloys? |
| A. | Fluorescent test |
| B. | Gamma ray test |
| C. | X-ray test |
| D. | Magnaflux test |
| E. | Any of the above |
| Answer» A. Fluorescent test | |
| 194. |
Which of the following process has the lowest rate of metal removal? |
| A. | Electron beam machining |
| B. | Electro discharge machining |
| C. | Abrasive jet machining |
| D. | Electro chemical machining |
| E. | Chemical machining |
| Answer» C. Abrasive jet machining | |
| 195. |
Which of the following machine is likely to be extensively used in a workshop manufacturing wire nails? |
| A. | Lathe |
| B. | Broaching machine |
| C. | Drilling machine |
| D. | Power press |
| E. | Cold heading machine |
| Answer» E. Cold heading machine | |
| 196. |
Shearing strain in the chip at shear plane is |
| A. | tan (? + ?) + cot ? |
| B. | tan (? - ?) - tan ? |
| C. | Infinite clearance |
| D. | tan (? - ?) + cot ? |
| E. | tan (? - ?) + tan ? |
| Answer» D. tan (? - ?) + cot ? | |
| 197. |
Which of the following is the most common bond used in grinding wheels? |
| A. | Shellac bond |
| B. | Pakelite bond |
| C. | Parting off |
| D. | Rubber bond |
| E. | Vitrified bond |
| Answer» E. Vitrified bond | |
| 198. |
The grain size of moulding sand is expressed in terms of |
| A. | Mean grain diameter |
| B. | Seive number |
| C. | Grain diameter |
| D. | Grain density |
| E. | Grain fitness number |
| Answer» E. Grain fitness number | |
| 199. |
Refractory metals are |
| A. | Those which can be cast in the form of bricks |
| B. | Those which reflect heat |
| C. | Those which have melting point above 1950?C |
| D. | Those which absorb heat |
| E. | Those do not malt in a normal furnace |
| Answer» C. Those which have melting point above 1950?C | |
| 200. |
Press die life is gauged by |
| A. | loss in weight |
| B. | amount of burr produced |
| C. | change of colour |
| D. | Any of the above |
| E. | Parting off |
| Answer» B. amount of burr produced | |
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