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UPPCL AE 2018 : Quiz 8
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Question 1
Which of the following circuit conditions does a metal oxide varistor (MOV) protect against?
Question 2
For a Phase Locked Loop system, the open loop transfer function is
The phase margin is 50° and the crossover frequency is approximately 1000 rad/s.
A time delay is introduced in the phase detector reducing the phase margin to 40°.
The maximum permissible time delay (in seconds) is:
The phase margin is 50° and the crossover frequency is approximately 1000 rad/s.
A time delay is introduced in the phase detector reducing the phase margin to 40°.
The maximum permissible time delay (in seconds) is:
Question 3
The combinational logic circuit shown in the given figure has an output Q which is
Question 4
In a communication system at 300 MHz, the receiving antenna gain ins 8 dBi, the transmitting antenna gain is 10 dBi and the transmitting power level is 25 watts, the distance between the transmitter and the receiver is 1 km, the power received at the receiving antenna port (assuming the propagation medium is loss-less) :
Question 5
If a network consists of ‘n’ number of nodes and ‘b’ numbers of branches. At what condition, mesh analysis equations becomes lesser than nodal analysis equations?
Question 6
An abrupt pn junction (located at x = 0) is uniformly doped on both p and n sides. The width of the depletion region is W and the electric field variation in the x-direction is E(x). Which of the following figures represents the electric field profile near the pn junction?
Question 7
Identify the modulation schemes for the shown signal constellation diagram.
Question 8
Phase function of a filter is (f) = 
, k > 0. The group delay of the filter has the shape
, k > 0. The group delay of the filter has the shape Question 9
Who formed the Indian Railways Association to introduce the railway in India?
Question 10
In the question a statement is given, followed by two arguments, I and II. You have to consider the statement to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given arguments, if any, is a strong argument.
Statement: Should speed breakers be banned?
Argument I: Yes, data shows that number of accidents increase after putting the speed breakers.
Argument II: No, it teaches fast drivers a lesson.
Statement: Should speed breakers be banned?
Argument I: Yes, data shows that number of accidents increase after putting the speed breakers.
Argument II: No, it teaches fast drivers a lesson.
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