McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 151. |
The sinuous path taken by an engine as against the alignment of the track is known as |
| A. | Hunting motion |
| B. | Lurching motion |
| D. | Rolling motion |
| E. | Nosing motion |
| Answer» E. Nosing motion | |
| 152. |
Pneumatic tyres are not used for providing |
| A. | speed |
| B. | traction |
| C. | friction |
| D. | comfort |
| Answer» C. friction | |
| 153. |
Escalators have the advantage of |
| A. | continuity of motion |
| B. | greater capacity |
| C. | small space requirement |
| D. | all of the above |
| Answer» D. all of the above | |
| 154. |
On railways a dynamometer car is used for |
| A. | recording the condition of track |
| C. | dinning facilities |
| D. | tourists |
| E. | military purpose |
| Answer» A. recording the condition of track | |
| 155. |
Dragline is generally used for |
| A. | excavation |
| B. | pushing |
| C. | dragging |
| D. | Any of the above |
| Answer» A. excavation | |
| 156. |
For railway track, the sleepers are made of |
| A. | wood |
| B. | cast iron |
| C. | RCC |
| D. | Any of the above |
| Answer» D. Any of the above | |
| 157. |
Which of the following cannot be handled using lifting magnets? |
| A. | High manganese steel |
| B. | Mild steel plates |
| C. | Castings of cast iron |
| E. | Scrap iron |
| Answer» A. High manganese steel | |
| 158. |
The handling capacity of a drag line having bucket of one cubic metre capacity is expected to be least while handling |
| A. | Sand |
| B. | Clay, wet sticky |
| C. | Gravel. |
| D. | Clay, hard tough |
| Answer» B. Clay, wet sticky | |
| 159. |
In which wire rope application, the highest factor of safety is necessary? |
| A. | Tow ropes |
| B. | Drag lines |
| C. | Slings |
| D. | Struck guys |
| Answer» C. Slings | |
| 160. |
Small chain hooks are generally |
| A. | cast |
| C. | cast and machined |
| D. | cold headed |
| E. | drop forged |
| Answer» E. drop forged | |
| 161. |
The thickness of belt is usually specified in terms of |
| A. | merit number |
| B. | thickness in mm |
| C. | number of plies |
| D. | index number |
| Answer» C. number of plies | |
| 162. |
All of the following are free flowing materials EXCEPT |
| A. | Soda ash |
| C. | Mica, pulverized |
| D. | Wheat |
| E. | Lead salts |
| Answer» E. Lead salts | |
| 163. |
A type size is specified as 8.25 - 20 in. In this 20 indicates |
| A. | outer diameter in inches |
| B. | cross-section of tyre in sq. inches |
| C. | mean diameter of the tyre in inches |
| E. | rim diameter in inches |
| Answer» E. rim diameter in inches | |
| 164. |
In case direct current motors are used for electric overhead cranes, the motors used are generally |
| A. | shunt wound |
| C. | series wound |
| D. | differentially compound wound |
| E. | cumulatively compound wound |
| Answer» C. series wound | |
| 165. |
Which of the following characteristic can be assigned to metallic dusts? |
| A. | Abrasive |
| B. | Corrosive |
| D. | Sticky |
| E. | Hygroscopic |
| Answer» A. Abrasive | |
| 166. |
Which railway sleeper provides the best rigidity? |
| A. | Cast iron |
| B. | RCC |
| C. | Wooden |
| E. | Cast steel |
| Answer» B. RCC | |
| 167. |
The expected life of aerial transport system (rope way or cable way) is usually |
| A. | 20 years |
| C. | 1 year |
| D. | 5 years |
| E. | 2 to 3 years |
| Answer» A. 20 years | |
| 168. |
In which case, the permissible incline in belt conveyor will be minimum? |
| A. | Clay, dry fine |
| C. | Dry silica sand |
| D. | Coal, slack |
| E. | Powdered lime |
| Answer» C. Dry silica sand | |
| 169. |
In case of belt conveyors, the bearings used for return idlers are |
| A. | anti-friction bearings |
| B. | cast iron bearings |
| D. | bush bearings |
| E. | split bush bearings |
| Answer» A. anti-friction bearings | |
| 170. |
In case of belt conveyors, the permissible slope will be least while conveying |
| A. | Gravel pebbles |
| B. | Sand |
| C. | Wood chips |
| E. | Lignite |
| Answer» A. Gravel pebbles | |
| 171. |
In case of belt conveyors, while conveying anthracite, the maximum permissible slope is |
| B. | 20? |
| C. | 28? |
| D. | 30? |
| E. | 16? |
| Answer» E. 16? | |
| 172. |
An ideal traction system should have |
| A. | high starting tractive effort |
| B. | easy speed control |
| C. | equipment capable of withstanding large temporary overloads |
| D. | all of the above |
| Answer» D. all of the above | |
| 173. |
Inflation pressure for truck tyres is generally |
| B. | 6 kg/cm2 |
| C. | 3 kg/cm2 |
| D. | 2.2 kg/cm2 |
| E. | 1 kg/cm2 |
| Answer» B. 6 kg/cm2 | |
| 174. |
Wrought iron |
| A. | is brittle |
| B. | has shock absorbing properties |
| C. | can be easily welded using electric arc |
| D. | all of the above |
| Answer» B. has shock absorbing properties | |
| 175. |
In case of locomotion, the coefficient of adhesion is highest when |
| A. | the rails are wet |
| B. | the rails are oiled |
| C. | the rails are dusty |
| E. | the rails are dry |
| Answer» A. the rails are wet | |
| 176. |
The size of electric motor depends on |
| A. | hoisting speed |
| B. | weight of load |
| C. | period of acceleration and retardation |
| D. | all of the above |
| Answer» D. all of the above | |
| 177. |
Transportation by locomotives is known as |
| B. | Hauling |
| C. | Pushing |
| D. | Lifting |
| E. | Dragging |
| Answer» B. Hauling | |
| 178. |
Dozers are used for handling material by |
| A. | dragging |
| B. | pulling |
| C. | pushing |
| D. | Any of the above |
| Answer» D. Any of the above | |
| 179. |
The power requirement in case of a screw conveyor depends on |
| A. | material to be handled |
| B. | rate of transportation |
| C. | length of conveyor |
| D. | all of the above |
| Answer» D. all of the above | |
| 180. |
Discoloration should be avoided while handing |
| A. | Silica flour |
| B. | Starch |
| C. | Tobacco |
| E. | Zinc oxide |
| Answer» E. Zinc oxide | |
| 181. |
The pressure of steam in a steam locomotive system is |
| B. | 115 to 125 kg/cm2 |
| C. | 20 to 30 kg/cm2 |
| D. | 70 to 90 kg/cm2 |
| E. | 10 to 15 kg/cm2 |
| Answer» E. 10 to 15 kg/cm2 | |
| 182. |
In case the clutch of a tractor slips, the probable cause cannot be |
| A. | worn out clutch plates |
| B. | misalignment of plates |
| C. | weak or broken pressure springs |
| E. | high engine speed |
| Answer» E. high engine speed | |
| 183. |
If a pump is operating at 100 rpm, it should be a |
| B. | rotory pump |
| C. | centrifugal pump |
| D. | sliding vane type pump |
| E. | reciprocating pump |
| Answer» E. reciprocating pump | |
| 184. |
Which one of the following does not form a part of Derrick crane? |
| B. | Bull wheel |
| C. | Jack |
| D. | Must |
| E. | Boom |
| Answer» C. Jack | |
| 185. |
Regenerative braking is |
| A. | more |
| B. | less |
| C. | less |
| D. | more |
| Answer» D. more | |
| 186. |
In which case of permissible incline in belt conveyor will be maximum? |
| A. | Stone, crushed |
| C. | Coal, run of mine |
| D. | Foundry sand |
| E. | Wet clay |
| Answer» D. Foundry sand | |
| 187. |
Electric overhead travelling cranes operate on |
| B. | ac only |
| D. | either ac or dc |
| E. | dc only |
| Answer» D. either ac or dc | |
| 188. |
In Kando system for electric locomotion |
| B. | dc supply is used to run series motors |
| C. | three phase ac is converted into dc |
| D. | single phase ac is converted into dc |
| E. | single phase supply is converted into three phase system |
| Answer» E. single phase supply is converted into three phase system | |
| 189. |
In case clutch is to be introduced in the drive for belt conveyor, which clutch will be preferred? |
| A. | Dog clutch |
| B. | Spring loaded clutch |
| C. | Hydraulic clutch |
| D. | Any of the above |
| Answer» C. Hydraulic clutch | |
| 190. |
All of the following materials have abrasive action on the belt conveyors except? |
| A. | Alum |
| B. | Borax |
| D. | Wet ash |
| E. | Arsenic salts |
| Answer» E. Arsenic salts | |
| 191. |
While dragging, the coefficient to friction (using steel plate) will be maximum in case of |
| A. | wet saw dust |
| B. | cement |
| C. | dry, hog fuel |
| D. | soda ash |
| Answer» B. cement | |
| 192. |
Rails for railway track are made of |
| A. | mild steel |
| B. | cast iron |
| C. | high speed steel |
| D. | chrome steel |
| Answer» D. chrome steel | |
| 193. |
Which of the following locomotive has the best acceleration characteristics? |
| A. | Diesel engine |
| B. | Steam engine |
| C. | Electric engine |
| E. | Shunting engine |
| Answer» C. Electric engine | |
| 194. |
Which of the following characteristic can be assigned to soda ash? |
| A. | Free flowing |
| B. | Explosive |
| C. | Fragile |
| D. | Caustic |
| Answer» D. Caustic | |
| 195. |
In case of Indian Railway diesel engines which type of diesel engine is used? |
| A. | Radial type engine |
| B. | V-type engine |
| D. | Multi-cylinder in line engine |
| E. | Wankel engine |
| Answer» D. Multi-cylinder in line engine | |
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