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SSC JE 2019-20 Technical Quiz 41

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Question 1

An a.c. tachometer is just a ________with one phase excited from the carrier frequency.

A. two-phase

Question 2

The source resistance of an ideal voltage source should be

Question 3

The SI unit of magnetic flux density is _______

Question 4

Which one of the following is the formula of Intensity of magnetization?

Question 5

What will be the coefficient of self-induction (in H) of the coil, if the current changes from +4 A to -4 A in 0.10-seconds and tile induced EMF is 16 V?

Question 6

In a split phase motor, the running winding should have __________.

Question 7

One of the speed control methods of a 3 phase induction motors ¡s _________.

Question 8

The power factor of a single-phase Induction motor is usually________

Question 9

The speed control of a universal motor used for sewing machines s done by __________.

Question 10

The resultant amature voltage of a synchronous motor is equal to the ___________
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Apr 13ESE & GATE EE