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AE-JE Foundation EE : Utilization of Electrical Energy Quiz -4

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Question 1

An ideal traction system should have:

Question 2

Which of the following test is usually conducted to determine the efficiency of traction motors?

Question 3

Which motor is used in electric traction system?

Question 4

The method of speed control adopted in 25 kW, single-phase, 50 Hz traction is:

Question 5

The most vital factor against electric traction is:

Question 6

Which of the following is not an advantage of using 25 kV, 50 Hz AC system in electric traction?

Question 7

Low frequency operation of a.c. series motor in traction application:

Question 8

State whether the following statements regarding electric traction are true or false.

(a) Provision of a negative booster is essential in the case of electric traction.

(b) Communication lines that run parallel to the power supply lines of electric traction stiffer from electrical interference.

Question 9

In electric traction, the friction at the track is proportional to

Question 10

________ gives the rate at which electric energy is dissipated or consumed in an electric circuit.

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Aug 26AE & JE Exams