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BARC-2018 EC: Mini Mock 5
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Question 1
A narrow band FM signal approximately defined by
If the maximum and minimum value of its envelope is given by 9.5 and 4.2 respectively then the value of
is __________.
If the maximum and minimum value of its envelope is given by 9.5 and 4.2 respectively then the value of
is __________. Question 2
The Fourier series of the signal x(t) = e–t with T = 1 sec is
Question 3
The divide by N counter is shown below. If initially QO = 0, Q1 = 1, Q2 = 0 the value of N is
Question 4
Consider the circuit shown in the figure. In this circuit R = 1 kΩ and C = 1 μF. The input voltage is sinusoidal with a frequency of 50 Hz, represented as a phasor with magnitude Vi and phase angle 0 radian as shown in the figure. The output voltage is represented as a phasor with magnitude V0 and phase angle δ radian. What is the value of the output phase angle δ (in radian) relative to the phase angle of the input voltage?
Question 5
The value of Z21 for the network given below is ________Ω.
Question 6
The Fourier transforms of a signal is 
If x[n] = g[n]q[n]
Where g[n] = αnu[n] and q[n] is a periodic signal with period 4, then the value of α is _______.
If x[n] = g[n]q[n]
Where g[n] = αnu[n] and q[n] is a periodic signal with period 4, then the value of α is _______.
Question 7
Consider an ideal silicon P-N junction diode with the following parameters
The ratio of
so that 95% of current in depletion region is carried by electron is
The ratio of
so that 95% of current in depletion region is carried by electron isQuestion 8
In a uniform linear array, four isotropic radiating elements are spaced λ/2 apart. The progressivephase shift between the elements required for forming the main beam at 60 ° off the end fire is
Question 9
A system is described by the following state equations and output equation
Where u (t) is the input and y(t) is the output. The state-transition matrix of the above system is
Where u (t) is the input and y(t) is the output. The state-transition matrix of the above system is
Question 10
The open loop transfer function of a system is given as 
It is converted into a closed loop system by providing a negative feedback having feedback transfer function (s + 2), then the open loop and closed loop system are said to be respectively
It is converted into a closed loop system by providing a negative feedback having feedback transfer function (s + 2), then the open loop and closed loop system are said to be respectively - 454 attempts
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ESE & GATE ECGeneralJun 8ESE & GATE EC
