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Year 2023
November
Week # 3
Expire on 14 Dec 2023
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November
Week # 4
Expire on 21 Dec 2023
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December
Week # 1
Expire on 31 Dec 2023
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December
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Expire on 07 Jan 2024
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FAQs
March
Week # 2 Quiz 1
Q1.
For ground fault, we prefer
Plain impedance relay
Direction relay
Reactance relay
Over current relay
Q2.
As per “Electricity Act 2003” the National Load Dispatch Center shall not engage in,
Trading of electricity
Controlling power distribution to states
Monitor grid operations
Supervision and control over inter state transmission
Q3.
The rotor voltage of a slip-ring induction motor gives 120 oscillations per minute when the motor is connected to 3-phase, 50Hz supply. The percentage slip of the rotor is
2
4
5
6
Q4.
A three phase synchronous motor will have
no slip rings
two slip rings
one slip rings
three slip rings
Q5.
The step response of a system with transfer function \(G(s) = \frac{1}{(Ts+1)}\) attains more than 98% of its final value in time t equal to
T
2T
3T
4T
Q6.
If \(f_1\) and \(f_2\) are half-power frequencies, such that \(f_2> f_1\), then the bandwidth B =__________.
\(f_2- f_1\)
\(\frac{f_1}{f_2}\)
\(f_2 + f_1\)
\(\frac{f_2}{f_1}\)
Q7.
The effect of adding poles and zeros can be determined quickly by
Nicholas Chart
Nyquist Plot
Bode Plot
Root Locus
Q8.
As the size of a thermal generating unit increases,the capital cost per KW of installed capacity
decreases
increases
remain the same
may increase or decrease
Q9.
The step response of a system is \((1+e^{-3t})\). It is cascaded with another control block with impulse response of \(e^{-2t}\). The transfer function of the cascaded combination is
\(\frac{1}{s(s+3)}\)
\(\frac{2s+3}{(s+2)(s+3)}\)
\(\frac{2}{(s+1)(s+2)}\)
\(\frac{1}{s(s+2)}\)
Q10.
The resolution of an instrument is the
minimum quantity it can measure
maximum quantity it can measure
maximum non-linearity
none of the above
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