McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 101. |
Ammonium nitrate is hygroscopic as well as an explosive. Which of the following conveyor can be used for this material? |
| A. | Flight conveyor |
| B. | Continuous flow conveyor |
| C. | Screw conveyor |
| D. | Any of the above |
| Answer» D. Any of the above | |
| 102. |
Chains for material handling equipment are generally made of |
| A. | carbon steel |
| C. | wrought iron |
| D. | mild steel |
| E. | cast iron |
| Answer» A. carbon steel | |
| 103. |
Which of the following types of rail is not used on broad gauge? |
| A. | 90 m |
| B. | 60 R |
| D. | 75 R |
| E. | 115 R |
| Answer» B. 60 R | |
| 104. |
Drag line excavators are used for digging |
| A. | drainage ditches |
| B. | canals |
| C. | gravel pits |
| D. | Any of the above |
| Answer» D. Any of the above | |
| 105. |
In material handling plants, automatic scales are used for |
| A. | dressing the material |
| C. | weighing the material |
| D. | batching the material |
| E. | sizing the material |
| Answer» C. weighing the material | |
| 106. |
In case of bridge girders |
| A. | I-sections are used |
| B. | box-girders are used |
| C. | any of the above can be used |
| Answer» C. any of the above can be used | |
| 107. |
Which one of the following does not fall under the category of hoisting equipment? |
| A. | Drag line |
| C. | Pull lift |
| D. | Jack |
| E. | Chain hoist |
| Answer» A. Drag line | |
| 108. |
In case of lifting magnets, for releasing the material lifted |
| A. | direction of dc current is reversed |
| C. | ac current is passed through the coil |
| E. | hooks are used |
| Answer» A. direction of dc current is reversed | |
| 109. |
In case of diesel-electric locomotives |
| A. | power output of diesel engine is taken by dc generator |
| B. | electric motors serve as prime source of power |
| C. | electric motors as well diesel engine provide the propulsive power |
| D. | None of the above |
| Answer» A. power output of diesel engine is taken by dc generator | |
| 110. |
In screw conveyors, ribbon screws are used for |
| A. | molasses |
| B. | hot tar |
| C. | asphalt |
| D. | all of the above |
| Answer» D. all of the above | |
| 111. |
In case of belt conveyors, while conveying earth, as excavated, the maximum permissible slope is around |
| A. | 10? |
| B. | 30? |
| C. | 40? |
| D. | 20? |
| Answer» D. 20? | |
| 112. |
In case of a belt conveyor, the driving motor |
| A. | always runs at slow speed |
| B. | always starts on load |
| C. | always starts on no load |
| E. | always starts at high speed |
| Answer» B. always starts on load | |
| 113. |
Lift trucks may be |
| A. | manually operated |
| B. | battery operated |
| C. | diesel engine powered |
| D. | Any of the above |
| Answer» D. Any of the above | |
| 114. |
Pillar cranes are generally used for |
| A. | light work |
| B. | infrequent service |
| C. | either of (A) or (B) above |
| Answer» C. either of (A) or (B) above | |
| 115. |
Hammer blow occurs in |
| A. | all engines |
| B. | steam engines |
| C. | electric engines |
| D. | diesel engines |
| Answer» B. steam engines | |
| 116. |
Which of the following has tendency to adhere to metal? |
| A. | Mica dust |
| B. | Talc |
| D. | Silica flow |
| E. | Gypsum |
| Answer» B. Talc | |
| 117. |
All of the following are granular materials EXCEPT |
| A. | Alum |
| B. | Hog fuel |
| C. | Bran |
| D. | Coffee beans |
| Answer» B. Hog fuel | |
| 118. |
Rubber belts in case of belt conveyors are reinforced with |
| A. | rayon |
| B. | nylon |
| C. | polyster |
| D. | Any of the above |
| Answer» D. Any of the above | |
| 119. |
Which of the following crane is self-propelled? |
| A. | Locomotive crane |
| B. | Column jib crane |
| C. | Derricks |
| D. | all of the above |
| Answer» A. Locomotive crane | |
| 120. |
Ash is abrasive as well as dusty. Which conveyor will be preferred for its handling? |
| A. | Drag chain conveyor |
| B. | Belt conveyor |
| D. | Flight conveyor |
| E. | Screw conveyor |
| Answer» A. Drag chain conveyor | |
| 121. |
Which of the following is the least preferred conveyor for handling glue? |
| A. | Continuous flow conveyor |
| B. | Screw conveyor |
| C. | Belt conveyor |
| E. | Pneumatic conveyor |
| Answer» E. Pneumatic conveyor | |
| 122. |
The normal speed on escalator is around |
| B. | 9.8 m/s |
| C. | 1 m/s |
| D. | 0.45 m/s |
| E. | 2.5 m/s |
| Answer» D. 0.45 m/s | |
| 123. |
All of the following are fragile except |
| A. | Glass tubes |
| C. | Borax |
| D. | Coffee beans |
| E. | Carbon black (pellets) |
| Answer» C. Borax | |
| 124. |
The advantage of electric braking is |
| A. | it is instantaneous |
| C. | motor continues to remain loaded during braking |
| D. | it avoids wear to track |
| E. | More heat is generated during braking |
| Answer» D. it avoids wear to track | |
| 125. |
The handling capacity of a drag line having buckets of one cubic metre capacity is expected to be highest in case of |
| B. | light moist clay |
| C. | clay, wet sticky |
| D. | clay, hard tough |
| E. | sand or gravel |
| Answer» B. light moist clay | |
| 126. |
The expected life of a wheeled tractor is nearly |
| A. | 2 to 3 years |
| B. | 8 to 10 years |
| D. | 1 year |
| E. | 5 to 6 years |
| Answer» B. 8 to 10 years | |
| 127. |
Lifting magnets are used as material handling devices for |
| A. | pig iron |
| B. | billets |
| C. | tubes |
| D. | all of the above |
| Answer» D. all of the above | |
| 128. |
The horse power to weight ratio of a diesel engine may be expected to be of the order of |
| A. | 45 to 50 kg/HP |
| B. | 85 to 100 kg/HP |
| D. | 10 to 15 kg/HP |
| E. | 25 to 35 kg/HP |
| Answer» A. 45 to 50 kg/HP | |
| 129. |
The horse power required to move a belt conveyor increases as |
| A. | conveyor speed |
| B. | load increases |
| C. | angle of inclination increases |
| D. | all of the above |
| Answer» D. all of the above | |
| 130. |
In case of pneumatic conveyors the minimum diameter of bend should be at least |
| A. | six |
| B. | three |
| C. | two |
| E. | ten |
| Answer» B. three | |
| 131. |
Which one of the following does not form a part of the specification for steel wire rope? |
| A. | Length |
| B. | Material of core |
| D. | Surface finish |
| E. | Lay |
| Answer» D. Surface finish | |
| 132. |
On metre gauge, the maximum horse power of engine, on Indian Railways is around |
| A. | 1400 |
| B. | 150 |
| C. | 2400 |
| E. | 750 |
| Answer» A. 1400 | |
| 133. |
Which of the following bearing is not used in earth moving equipment? |
| A. | Jewel bearing |
| B. | Needle bearing |
| C. | Bush bearing |
| D. | Ball bearing |
| Answer» A. Jewel bearing | |
| 134. |
Which of the following is sticky material? |
| A. | Sand (dam) |
| B. | Sewage sludge (wet) |
| C. | Malt |
| D. | all of the above |
| Answer» D. all of the above | |
| 135. |
A cylinder and a piston is invariably a part of |
| A. | screw type jacks |
| B. | rack-and-lever type jacks |
| C. | hydraulic jacks |
| D. | all of the above |
| Answer» C. hydraulic jacks | |
| 136. |
Bearings used on railway wagons are |
| A. | plumber blocks |
| B. | needle bearings |
| C. | ball bearings |
| D. | roller bearings |
| Answer» D. roller bearings | |
| 137. |
Roller conveyors are used for the movement of |
| A. | corrosive materials |
| B. | granular materials |
| C. | package goods |
| E. | fine dusts |
| Answer» C. package goods | |
| 138. |
Which locomotives are preferred for tunnel construction work? |
| A. | Steam locomotives |
| B. | Electric locomotives |
| C. | Storage battery locomotives |
| D. | None of the above |
| Answer» C. Storage battery locomotives | |
| 139. |
Which motor is preferred for belt conveyors? |
| A. | synchronous motor |
| B. | wound rotor induction motor |
| C. | double squirrel cage induction motor |
| D. | None of the above |
| Answer» C. double squirrel cage induction motor | |
| 140. |
In case of belt conveyors, the permissible slope will be maximum while conveying |
| A. | Earth, dry |
| C. | Anthracite coal |
| D. | Dry sand |
| E. | Wood chips |
| Answer» E. Wood chips | |
| 141. |
A diesel engine cannot be |
| A. | more efficient than a petrol engine |
| C. | used as prime-mover on locomotives |
| D. | run on variable speed |
| E. | started on load |
| Answer» E. started on load | |
| 142. |
The number of driving wheels in case of a 4 - 10 - 2 locomotive will be |
| A. | 4 |
| B. | 6 |
| C. | 10 |
| D. | 2 |
| Answer» C. 10 | |
| 143. |
Flight conveyors are used for the trans-portation of |
| A. | granular materials |
| B. | lumpy materials |
| C. | pulverized materials |
| D. | all of the above |
| Answer» D. all of the above | |
| 144. |
Hydraulic dredges are used in |
| A. | mining of platinum |
| C. | river and harbour work |
| D. | mining of tin |
| E. | mining of gold |
| Answer» C. river and harbour work | |
| 145. |
In case of skip hoists, the band-type brake is generally used for |
| B. | small hoists for light duty |
| C. | large hoists for light duty |
| D. | large hoists for heavy duty |
| E. | small hoists for heavy duty |
| Answer» B. small hoists for light duty | |
| 146. |
The motions of crane-hoisting, trolley traversing and bridging may be powered by |
| A. | electric motors |
| B. | air motors |
| C. | hydraulic units |
| D. | Any of the above |
| Answer» D. Any of the above | |
| 147. |
Which of the following conveyor can be used for handling saw dust? |
| A. | Belt conveyor |
| B. | Flight conveyor |
| C. | Pneumatic conveyor |
| D. | Any of the above |
| Answer» D. Any of the above | |
| 148. |
While dragging, the coefficient of friction (using steel plate) will be least in case of |
| A. | Hydrated lime |
| B. | Grains |
| C. | Cement |
| E. | Clays |
| Answer» B. Grains | |
| 149. |
Hopper bottom type wagon are used on Indian Railways for transportation of |
| A. | grains |
| B. | fertilisers |
| C. | coal |
| D. | all of the above |
| Answer» C. coal | |
| 150. |
The horse power to weight ratio of a steam engine is generally of the order of |
| B. | 20 - 30 kg/HP |
| C. | 30 - 50 kg/HP |
| D. | 60 - 80 kg/HP |
| E. | 10 - 15 kg/HP |
| Answer» D. 60 - 80 kg/HP | |
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