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ISRO Quiz 4

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Question 1

In a PID controller as shown, what will be the closed loop transfer function?

       

Question 2

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 3

Which of the following introduces mode partition noise?

Question 4

In the circuit, the silicon diode D1, having a voltage drop of 0.7 V is forward bias. A Zener diode D2 has a breakdown voltage of 6.8 V. From the options given below, select the right option that shows current flowing through 450 Ω resistor.

Question 5

During power measurement the out power measured was –90 dBm. What is the measured power in W?

Question 6

In the system shown below, the input VSWR is 1.5 at resonance. If the power-meter 1 reads 1 mW, what is the reading on the power-meter 2?

Question 7

The ideal op-amp has

Question 8

Find an expression for i0(t) in the circuit?
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Mar 20ESE & GATE EC