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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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