Time Left - 12:00 mins

ESE Technical Revision Quiz 15

Attempt now to get your rank among 328 students!

Question 1

Diodes are used to compensate which of the following transistor circuit parameters?
1) ICO
2) VBE
3) β

Question 2

The aerial current of an AM transmitter is 18 A when unmodulated, but increases to 20 A when modulated. The modulation index is

Question 3

Which is incorrect for DMA?

Question 4

In case of DC servo-motor the back-emf is equivalent to an “electric friction” which tends to.

Question 5

Assertion (A): Emitter-coupled logic (ECL) provides high speed logic gates
Reason (R): ECL prevents adverse effects of diffusion capacitance as it does not operate full saturated or cut-off

Question 6

A quarter wave-length transformer is used to match a load of 200Ω to a line with input impedance of 50Ω. The characteristic impedance of the transformer would be