MCQOPTIONS
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MCQOPTIONS
This section includes 170 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Tractive effort is required to |
| A. | Overcome the gravity component of train mass |
| B. | Overcome friction, windage and curve resistance |
| C. | Accelerate the train mass |
| D. | Do all of the above |
| Answer» E. | |
| 152. |
Which of the following is the voltage for single phase A.C. system? |
| A. | 22 V |
| B. | 440 V |
| C. | 5 kV |
| D. | 15 kV |
| Answer» B. 440 V | |
| 153. |
Battery operated trucks are used in |
| A. | Steel mills |
| B. | Power stations |
| C. | Narrow gauge traction |
| D. | Factories for material transportation |
| Answer» E. | |
| 154. |
_________ locomotive has the highest operational availability. |
| A. | Electric |
| B. | Diesel |
| C. | Steam |
| D. | All of the above |
| Answer» B. Diesel | |
| 155. |
In case of ___________ free running and coasting periods are generally long. |
| A. | Mainline service |
| B. | Urban service |
| C. | Suburban service |
| D. | All of the above |
| Answer» B. Urban service | |
| 156. |
For which of the following locomotives the maintenance requirements are the least? |
| A. | Steam locomotives |
| B. | Diesel locomotives |
| C. | Electric locomotives |
| D. | Equal in all of the above |
| Answer» C. Electric locomotives | |
| 157. |
Overload capacity of diesel engines is usually restricted to |
| A. | 2 percent |
| B. | 10 percent |
| C. | 20 percent |
| D. | 40 percent |
| Answer» B. 10 percent | |
| 158. |
In case of locomotives the tractive power is provided by |
| A. | Single cylinder double acting steam engine |
| B. | Double cylinder, single acting steam engine |
| C. | Double cylinder, double acting steam engine |
| D. | Single stage steam turbine |
| Answer» D. Single stage steam turbine | |
| 159. |
The efficiency of diesel locomotives is nearly |
| A. | 20 to 25 percent |
| B. | 30 to 40 percent |
| C. | 45 to 55 percent |
| D. | 60 to 70 percent |
| Answer» B. 30 to 40 percent | |
| 160. |
Which of the following braking systems is used on steam locomotives? |
| A. | Hydraulic system |
| B. | Pneumatic system |
| C. | Vacuum system |
| D. | None of the above |
| Answer» D. None of the above | |
| 161. |
Coefficient of adhesion reduces due to the presence of which of the following? |
| A. | Sand on rails |
| B. | Dew on rails |
| C. | Oil on the rails |
| D. | Both (B) and (C) |
| Answer» E. | |
| 162. |
In main line service as compared to urban and suburban service |
| A. | Distance between the stops is more |
| B. | Maximum speed reached is high |
| C. | Acceleration and retardation rates are low |
| D. | All of the above |
| Answer» E. | |
| 163. |
The wheels of a train, engine as well as bogies, are slightly tapered to |
| A. | Reduce friction |
| B. | Increase friction |
| C. | Facilitate braking |
| D. | Facilitate in taking turns |
| Answer» E. | |
| 164. |
Specific energy consumption becomes |
| A. | More on steeper gradient |
| B. | More with high train resistance |
| C. | Less if distance between stops is more |
| D. | All of the above |
| Answer» E. | |
| 165. |
In case of a steam engine an average coal consumption per km is nearly |
| A. | 150 to 175 kg |
| B. | 100 to 120 kg |
| C. | 60 to 80 kg |
| D. | 28 to 30 kg |
| Answer» E. | |
| 166. |
Due to which of the following coefficient of adhesion improves? |
| A. | Rust on the rails |
| B. | Dust on the rails |
| C. | Sand on the rails |
| D. | All of the above |
| Answer» E. | |
| 167. |
Automatic signalling is used for which of the following trains ? |
| A. | Mail and express trains |
| B. | Superfast trains |
| C. | Suburban and Urban electric trains |
| D. | All trains |
| Answer» C. Suburban and Urban electric trains | |
| 168. |
Which of the following braking systems on the locomotives is costly? |
| A. | Regenerative braking on electric locomotives |
| B. | Vacuum braking on diesel locomotives |
| C. | Vacuum braking on steam locomotives |
| D. | All braking systems are equally costly |
| Answer» B. Vacuum braking on diesel locomotives | |
| 169. |
In India, electrification of railway track was done for the first time in which of the following years? |
| A. | 1820 - 1825 |
| B. | 1880 - 1885 |
| C. | 1925 - 1932 |
| D. | 1947 - 1954 |
| Answer» D. 1947 - 1954 | |
| 170. |
Overhead lines for power supply to tram cars are at a minimum height of |
| A. | 3 m |
| B. | 6 m |
| C. | 10 m |
| D. | 15 m |
| Answer» D. 15 m | |