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GATE EC: 2018 Mini Mock 10
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Question 1
Two voltage of +0.6V and -1.4V are applied to the two input resistors of a summing amplifier. The respective input resistors are 400KΩ and 100KΩ and feedback resistor is 200KΩ. Determine the out put voltage.
Question 2
A control system is described by the given signal flow graph. Which of the following equation represents the given system?
Question 3
A bar of intrinsic Ge of 6 cm length is subjected to a potential difference of 12 V. If the velocity of electrons in the bar is 73 m/s, determine the mobility of electrons.
Question 4
The effective aperture of an antenna in free space is 2 m2. If the antenna receives 4 μW of power, then the peak incident electric field is given by
Question 5
Given a vector function 
=(3x+c1z)
+(c2x-5z)
+(4x-c3y+c4z)
. What will be the values of c1, c2 respectively?
=(3x+c1z)+(c2x-5z)+(4x-c3y+c4z) . What will be the values of c1, c2 respectively? Question 6
The Y-parameters of two two-port networks 
and 
are obtained as:
Determine the Y-parameters of the two port network formed by the series connection of the networks
and 
.
and are obtained as: Determine the Y-parameters of the two port network formed by the series connection of the networks
and . Question 7
In the circuit shown in figure switch SW1 is initially CLOSED and SW2 is OPEN. The inductor L carries a current of 10 A and the capacitor is charged to 10 V with polarities as indicated. SW2 is CLOSED at t = 0+ and SW1 is OPENED at t = 0. The current through C and the voltage across L at t = 0+ is
Question 8
The Fourier transform of a function f(t) is obtained as,
Determine the area under the function f(t).
Determine the area under the function f(t).
Question 9
region 1, Z<0 and region 2, Z>0 are both perfect dielectrics. A uniform plane wave traveling in the 
direction has a frequency of 
.Its Wavelength in two regions are 
On the boundary the reflected energy is: -
direction has a frequency of .Its Wavelength in two regions are On the boundary the reflected energy is: - Question 10
In the voltage regulator circuit shown in the figure, the op-amp is ideal. The BJT has 
and the zener voltage is 4.7V. For a regulated output of 9 V, the value of R(inW) is ______ .
and the zener voltage is 4.7V. For a regulated output of 9 V, the value of R(inW) is ______ . - 609 attempts
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ESE & GATE ECGeneralJun 7ESE & GATE EC
