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BARC EE Quiz - 1

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Question 1

In power system the inductance and stray capacitance to earth upto the circuit breaker location are 40mH and 0.04 μF respectively . the value of resistor to be across CB contacts for critical damping is ?

Question 2

What is the load power factor when voltage regulation is found to be zero and resistance & reactance appears to be equal in a short transmission line?

Question 3

A single phase induction motor draws 12 MW power at 0.6 lagging power factor. A capacitor is connected in parallel to the motor to improve the power factor of the combination of motor and capacitor to 0.8 lagging. Assuming that the real and reactive power drawn by the motor remains same as before, the reactive power delivered by the capacitor in MVAR is ____________.

Question 4

Which type of turbine is preferred for high water head ?

Question 5

Find the network equivalent resistance RTH across terminals A and B in circuit shown?

Question 6

Find the Norton’s equivalent circuit parameters of the circuit shown in figure below:

Question 7

An AC source having angular frequency of 3rad/s has impedance consisting of 4 Ω resistance in series with 1H inductance. Determine the load to which maximum power can be transferred.

Question 8

A power system has two generators with fuel cost curves as and and minimum generation on each generator is 110 MW. To supply total load of 250 MW, generation on ‘generator 1’ and generator ‘2’ respectively ________

Question 9

For the block diagram shown below transfer function C(s)/R(s) is

Question 10

If plot of a signal f(t) is shown in figure below

Then the plot of signal f(–t–3) will be

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Jun 9ESE & GATE EE