AP ECET EEE 2016-4

1.The percentage regulation of an overhead transmission line can be zero when the load power factor is

A. Lagging

B. Leading

C. Unity

D. 0.8 p.f

Answer : Leading
Explain:-

2.The distributors for residential areas are

A. Three phase four wire

B. Three phase three wire

C. Two phase

D. Single phase

Answer : Three phase four wire
Explain:-

3.Insulation resistance of cable is

A. Inversely proportional to its length

B. Directly proportional to its length

C. Independent of length

D. Proportional to square of length

Answer : Inversely proportional to its length
Explain:-

4. The sag of a transmission line is least affected by

A. Self-weight of conductor

B. Temperature of surrounding air

C. Current through conductor

D. Ice deposited on conductor

Answer : Current through conductor
Explain:-

5. Which of the following is an advantage of electric traction over other medhods of traction

A. Faster acceleration

B. Large pollution problems

C. Slow braking action

D. Low speed

Answer : Faster acceleration
Explain:-

6.The speed of the train estimated taking into account the time of stop at a station in addition to the actual running time between stops, is known as

A. average speed

B. Schedule speed

C. Notching speed

D. free running speed

Answer : Schedule speed
Explain:-

7.Metadyne control method is employed in which traction system

A. Urban

B. Suburban

C. Rural

D. Underground

Answer : Underground
Explain:-

8. A train has a schedule speed of 36 km per hour on a lovel track. If the distance between the stations is 2 km and the stoppage is 30 seconds the actual time of run will be

A. 260 seconds

B. 230 seconds

C. 200 seconds

D. 170 seconds

Answer : 170 seconds
Explain:-

9. The speed time curve for a local train is shown if Figure. In this AB represents