Electric Traction MCQ PDF Download

1. Main traction systems used in India are those using ……….. locomotives.

(a) steam engine
(b) diesel engine
(c) diesel-electric
(d) electric
(e) all of the above

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2. Diesel electric traction has comparatively limited overload capacity because

(a) diesel engine is a constant output prime mover.
(b) diesel engine has shorter life span.
(c) regenerative braking cannot be employed.
(d) diesel-electric locomotive is heavier than an ordinary electric locomotive.

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3. The range of horse power of diesel locomotives is

(a) 100 – 500
(b) 1,500 – 2,500
(c) 3,000 – 4,500
(d) 4,500 – 5,000

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4. In India, diesel locomotives are manufactured at

(a) Varanasi.
(b) Kolkata.
(c) Bangalore.
(d) Ajmer.

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5. In diesel-electric drive

(a) initial investment required is low.
(b) locomotive and train is a self-contained unit.
(c) power loss in speed control is low.
(d) all of the above.

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6. Battery driven vehicles

(a) are easy to control and very convenient to use.
(b) have low maintenance cost.
(c) cause no pollution.
(d) all of the above.

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7. Battery operated trucks are used

(a) in power stations.
(b) for local delivery of goods in large towns with maximum daily run up to 50 – 60 km.
(c) in narrow gauge traction.
(d) for main line service.

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8. Electric traction in comparison to other traction systems has the advantage(s) of

(a) higher acceleration and braking retardation.
(b) cleanest system and so ideally suitable for the underground and tube railways.
(c) better speed control.
(d) all of the above.

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9. Electric railway can handle the traffic upto double the amount possible with steam railway. It is because of

(a) better speed control.
(b) larger passenger carrying capacity.
(c) higher schedule speed.
(d) both (b) and (c).

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10. Electric traction in comparison to other traction systems has the drawback(s) of

(a) interference with communication lines running along the track.
(b) heavy initial expenditure in laying out overhead electric supply system.
(c) interruption of traffic-rot hours owing to short time power failure.
(d) all of the above.

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11. The most vital factor against electric traction is

(a) its high maintenance cost.
(b) possibility of Power failure.
(c) high initial cost laying out overhead electric supply system.
(d) necessity of providing a negative booster.

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12. The locomotive that has the best operational availability is

(a) diesel-electric.
(b) electric.
(c) steam.
(d) steam-electric.

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13 Unbalanced forces are maximum in case of

(a) diesel shunters.
(b) diesel locomotives.
(c) steam locomotives.
(d) electric locomotives.

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14. Maintenance requirements are minimum in case of

(a) electric locomotives.
(b) steam locomotives.
(c) diesel electric locomotives.
(d) diesel engines.

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15. A drive suitable for mines where explosive gases may exists

(a) steam engine.
(b) battery locomotive.
(c) diesel engine.
(d) any of the above.

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16. A submarine is provided driving power through.(while moving under water)

(a) diesel engines.
(b) steam engines
(c) batteries.
(d) gas turbine.

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17. Ordinary tramway is the most economical means transport for

(a) very dense traffic in large cities.
(b) rural services.
(c) suburban services.

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18. Unlike a tramway, a trolley bus needs no

(a) driving axles.
(b) running rail.
(c) hand brakes.
(d) overhead contact wire.

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19. The direct current system employed for tramways operates on

(a) 3000 V
(b) 1500 V
(c) 750 V
(d) 400 V

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20. For tramways the return circuit is

(a) track rails.
(b) neutral wire.
(c) common earthing.
(d)cables.

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