McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 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 | |
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