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SSC Scientific Assistant EC: Quiz 3

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Question 1

For the transistor amplifier of Fig., the input current

Question 2

In the below figure, the input resistance is

Question 3

In Fig., if

is open-circuited, then the voltage gain will

Question 4

In the a.c. equivalent circuit of a transistor amplifier, the capacitors are considered ……………….

Question 5

In Fig., the co-efficient of coupling between the coils is……..
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Question 6

In general, fluid friction damping is not employed in indicating instruments although one can find its use in …………

Question 7

In a balanced three-phase system, the phase voltage is

and the phase current is

The load p.f. is

Question 8

All a.c. equipment is rated in kVA because

Question 9

To obtain P type Si semiconductor, we need to dope pure Si with

Question 10

When feedback is negative the first derivative control will

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ESE & GATE EC General

Jun 30ESE & GATE EC