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BARC-2018 EC:Full Syllabus Mock 2
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Question 1
The ABCD-parameters of a 2-port network are
If such two 2-port networks are cascaded, then Z-parameter matrix for the cascaded network is
If such two 2-port networks are cascaded, then Z-parameter matrix for the cascaded network is
Question 2
Hybrid parameter hi of a transistor is determined by
Question 3
For doubling the current value of the efficiency of a side band AM wave, the modulation index should be
Question 4
When a transistor amplifier having a current gain of 75 is given an input signal
Vi = 2 sin (157 t + π/2)
the output signal is found to be
Vo = 200 sin (157 + 3π/2).
The transistor is connected as
Vi = 2 sin (157 t + π/2)
the output signal is found to be
Vo = 200 sin (157 + 3π/2).
The transistor is connected as
Question 5
The three-stage Johnson counter is clocked at a constant frequency of f from the starting state of Q2Q1Q0 = 101. What will be the frequency of the output Q2Q1Q0 ?
Question 6
In the following circuit, Power delivered to resistor R in W is
Question 7
A white noise with two sided power spectral density of 2.6
10-6 W/Hz is applied to an ideal filter with bandwidth B. In order to have average noise power at the output to be 16 W, the bandwidth ‘B’ should be
10-6 W/Hz is applied to an ideal filter with bandwidth B. In order to have average noise power at the output to be 16 W, the bandwidth ‘B’ should be Question 8
For open loop transfer function
The gain ‘K’ at break point will be
The gain ‘K’ at break point will be
Question 9
The E-field of a uniform plane wave travelling in free space is as follows:
. The magnetic field will be:
. The magnetic field will be:Question 10
The minimum and maximum Eigen values of the matrix 
are -2 and 6 respectively. What is the other Eigen value?
are -2 and 6 respectively. What is the other Eigen value? Question 11
Select the correct transfer function of closed control system shown?
Question 12
The bit rate of QPSK is 90Mbit/s. The baud rate will be
Question 13
Which of the following is not true about a Schottky Barrier Diode (SBD)
a) In the SBD, current is conducted by majority carriers.
b) The SBD exhibits the minority-carrier charge-storage effects.
c) Schottky diodes can be switched from on to off, and vice versa, much faster than is possible with pn-junction diodes.
d) The forward voltage drop of a conducting SBD is higher than that of a pn-junction diode.
a) In the SBD, current is conducted by majority carriers.
b) The SBD exhibits the minority-carrier charge-storage effects.
c) Schottky diodes can be switched from on to off, and vice versa, much faster than is possible with pn-junction diodes.
d) The forward voltage drop of a conducting SBD is higher than that of a pn-junction diode.
Question 14
For the given feedback system, the forward path does not affect the system output if KG is
Question 15
Which of the following represents space –charge neutrality?
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ESE & GATE ECGeneralJun 7ESE & GATE EC
