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ISRO EC 2018 Live Quiz Session Solution (10th April)

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Question 1

The initial contents of the 4-bit serial-in-parallel-out right shift register shown in figure is 1001. After three clock pulses are applied, the contents of shift register will be

Question 2

A solid iron cylinder is placed in a region containing a uniform magnetic field such that the cylinder axis is parallel to the magnetic field direction. The magnetic field lines inside the cylinder will

Question 3

Twenty four voice signals are sampled uniformly at a rate of 8 KHz and then time division multiplexed. The sampling process uses flat top samples with 1 Hs. Duration. The multiplexing operation includes provision for synchronization by adding and extra pulse of 1 us duration. The spacing b/w successive pulses of the multiplexed signal is

Question 4

For differentiator circuit shown in figure, Determine the output voltage if the input goes from 0V to 10V in 0.4sec . Assume the input voltage changes at constant rate .

Question 5

Consider a long-channel NMOS transistor with source and body connected together. Assume that the electron mobility is independent of V_GS, and V_DS. Given,
g_m= 0.5 μA/ V for V_DS= 50 mV and V_GS= 2V,
g_{d =}8 μA/ V _forV_DS = 0 mV and V_GS= 2V_,
The threshold voltage (in volts) of the transistor is ______

Question 6

Consider an air-filled rectangular waveguide with dimensions a = 2.286 cm and b = 1.016 cm. At 10 GHz operating frequency, the value of the propagation constant (per meter) of the corresponding propagating mode is _________.

Question 7

then the value

where V is the closed region bonded by

, is _______.

Question 8

Find the value of R if quality factor Q is 10, inductance L=10H and capacitance C= 5F. How will the inductance change if Q is doubled and Rand C remain constant?

Question 9

Determine the value of G(s) if the closed loop transfer function for the given system is:

Question 10

Consider s DT system whose input - output relationship is given by
y[n] = x[n + 1] - 5x[n] + 3x[n - 1] the system is

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ESE & GATE EC General

Jun 18ESE & GATE EC