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DMRC 2018 Electronics Engineering : Quiz 11
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Question 1
Two point charges are placed on x-axis. A 
charge is at x = 10 cm and 
charge is at x = 40 cm. What is the potential at x = 100 cm from the origin?
charge is at x = 10 cm and charge is at x = 40 cm. What is the potential at x = 100 cm from the origin? Question 2
The equivalent capacitance of two capacitors in parallel is four time their equivalent capacitance in series. This means that
Question 3
A load is connected to a circuit. At the terminals to which the load is connected, 
The maximum power supplied to the load is
The maximum power supplied to the load is Question 4
A 24 V battery of internal resistance 
is connected to a variable resistor. At what value of current drawn from the battery is the heat produced in the resistor maximum?
is connected to a variable resistor. At what value of current drawn from the battery is the heat produced in the resistor maximum? Question 5
A lead compensating network
(a) Improves response Time
(b) Stabilize the system with low phase margins
(c) Enables moderating increase in gain without affecting stability
(d) Increase resonant frequency
(a) Improves response Time
(b) Stabilize the system with low phase margins
(c) Enables moderating increase in gain without affecting stability
(d) Increase resonant frequency
Question 6
An 8-to-1 multiplexer is used to implement a logical function Y as shown in the figure. The output Y is given by
Question 7
Consider a continuous time signal x(t) whose Fourier transform is 
[Where u(ω) is unit step signal]
The signal x(t) is
[Where u(ω) is unit step signal]
The signal x(t) is
Question 8
In an amplifier circuit, on introducing negative feedback network, which of the following changes occur?
i) Gain increases.
ii) Bandwidth increases.
iii) I/P & O/P impedences remain constant.
iv) Gain Bandwidth Product (GBP) remains constant.
i) Gain increases.
ii) Bandwidth increases.
iii) I/P & O/P impedences remain constant.
iv) Gain Bandwidth Product (GBP) remains constant.
Question 9
A carrier signal 
is modulated by a modulating signal 
If the modulation index is unity, then the power in USB is given by
is modulated by a modulating signal If the modulation index is unity, then the power in USB is given by Question 10
A rectangular waveguide operates at 4.5 GHz in the dominant mode. IF the group velocity is determined as 1.5 x 108 m/s, the largest dimension of the waveguide is ________cm.
(Assume that the guide is filled with a lossless dielectric
(Assume that the guide is filled with a lossless dielectric
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