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ESE Prelims 2022 Achievers Quiz 17

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Question 1

The gain margin and the phase margin of a feedback system with

are

Question 2

Given that the relation between rise time tr and upper Cut-off frequency for single stage is

The rise time for two identical stage

given by

Question 3

The DTFT of u[n -2] - u[n - 6]

Question 4

The loss-less, quarter wavelength long, RF transmission of characteristic impedance 50 $Description: Description: Description: Description: Description: E:\GradeStack Courses\ISRO-EC-2012_files\image089.png$ is terminated in pure resistive load impedance 100 $Description: Description: Description: Description: Description: E:\GradeStack Courses\ISRO-EC-2012_files\image089.png$ , the input impedance is:

Question 5

Which of the following instrument is needed for both protection and metering?

Question 6

n similar resistors each of resistance r when connected in parallel have the total resistance R. When these resistances are connected in series, the total resistance is

Question 7

What is resistance required to extend the 0-100V range of internal resistance 2000Ω meter to 0-1000V ?

Question 8

In N silicon semiconductor, hole density decreases from 10¹⁴ cm^-3 - 10¹³ cm^-3 from x = 0 and x =

mm. What will be the hole diffusion current density if

Question 9

If an npn-silicon transistor transistor is operated at V_CE = 5 V and I_C = 100 μA and has a current gain of 100 in the _CE connection, then the input resistance of this circuit will be.

Question 10

How many 32K × 1 RAM chips are needed to provide a memory capacity of 256 K bytes?

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ESE & GATE EC General

Aug 8ESE & GATE EC