M

Mr. Dubey • 52.30K Points
Coach 

Q. Which of the following methods is used to control speed of 25 kV, 50 Hz single phase traction ?

(A) Reduced current method
(B) Tap changing control of transformer
(C) Series parallel operation of motors
(D) All of the above
Correct : Option (B)

Share

Discusssion

Login to discuss.

Be the first to start discuss.

Related MCQs

Q. The disadvantage with paper as insulating material is

Q. One condition to be satisfied in an oscillator circuit so that stable oscillations are produced is:

Q. A linear time invariant system is stable if :

Q. An automatic toaster is a loop control system.

Q. What happens when the radiation resistance of the antenna matches the characteristic impedance of the transmission line?

Q. Delay time is the time required by a system to reach a quarter of its steady state value.

Q. By the use of which of the followingm D.C. can be obtained from AC?

Q. For a D.C. shunt motor which of the following is incorrect 7

Q. How is the sampling rate conversion achieved by factor I/D?

Q. The capacity of a crane is expressed in terms of