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ISRO Quiz 13

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Question 1

An open loop transfer function with unity feedback system is

The value of K at one of the break-away or break-in points of the root locus for the above system.

Question 2

In broad side array 9 isotropic radiators are equally spaced at a distance of

The beam width between first nulls will be approximately

Question 3

Consider an N-MOS transistor shown in the circuit below:

The N-MOS transistor is so constructed that it has , the threshold voltage V_T = 1.2 V and λ = 0, then the value of voltage V_DS is equal to

Question 4

The area bounded by the curves y² = x, y = x is given by

Question 5

A long solenoid of radius R, having N turns per unit length carries a time dependent current

The magnitude of induced electric field at a distance R/2 radially from the axis of the solenoid is

Question 6

A Gold cavity resonator at 10 GHz is fully coated using

m YBCO (Yttrium Barium Copper Oxide) material and operating at boiling temperature of liquid nitrogen. What is the Skin Depth of RF at this frequency?
Assume

= 4X10⁷ Siemens/meter at cavity operating temperature.

Question 7

A wireless local area network signal that has a noise bandwidth of approximately 6 MHz. If the signal strength at the receives input terminals is –90 dBm. And receiver noise figure is 8dB. What is the pre detection signal to noise ratio?

Question 8

The network shown in below figure consist of two coupled coils and a capacitor. At t = 0, the switch is closed connecting a voltage generator,

What will be the value of

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ESE & GATE EC General

May 22ESE & GATE EC