Govt Exams Mock Test FREE | Online Quiz Competition

Q1. Two-wattmeter method is used to measure the power in a three phase load. The wattmeter readings are 375 W and –50 W. Calculate the total active power.

\(325\:VAR\)

\(325\:W\)

\(425\sqrt3\:W\)

\(\frac{325}{\sqrt3}\:W\)

Q2. Two electric lamps have filaments of the same metal having the same thickness. If one of them gives 100 watt and other gives 500 watt across the same supply, then:

100 watt lamp filament has longer a length

100 watt lamp filament has a shorter length

100 watt and 500 watt lamp filaments have the same length

500 watt lamp filament has a longer length

Q3. At time \(t=0_+\), with zero initial condition, which of the following acts as an open circuit?

Current source

Capacitor

Voltage source

Inductor

Q4. Branch of a tree is called a ________.

link

cotree

twig

cut set

Q5. A magnetic field exists around

iron

copper

aluminium

moving charges

Q6. For which of the following ‘ampere second’ could be the unit?

Reluctance

Charge

Power

Energy

Q7. The impulse response of system is \(c (t) = – te^{– t} + 2e^{– t} (t > 0)\). Its closed loop transfer function is

\(\frac{2s+1}{s^2}\)

\(\frac{2s+1}{(s+1)^2}\)

\(\frac{2s+2}{(s+1)^2}\)

\(\frac{2s+2}{s^2}\)

Q8. A system is stable for

Gain margin and Phase margin both positive.

Gain margin and Phase margin both negative.

Gain margin positive, Phase margin negative.

Phase margin negative.

Q9. The damping ratio of a system having the characteristic equation (\( s^2\) + 2\(s\) + 8) = 0 is

0.353

0.33

0.3

0.25

Q10. The Nyquist plot for a control system encircles the critical point at (-1, j0). What can be concluded about the system's stability?

Stable

Marginally stable

Unstable

Oscillatory

Quiz

Year 2025

February
Week # 1 Quiz 3

Q1. Two-wattmeter method is used to measure the power in a three phase load. The wattmeter readings are 375 W and –50 W. Calculate the total active power.

Q2. Two electric lamps have filaments of the same metal having the same thickness. If one of them gives 100 watt and other gives 500 watt across the same supply, then:

Q3. At time \(t=0_+\), with zero initial condition, which of the following acts as an open circuit?

Q4. Branch of a tree is called a ________.

Q5. A magnetic field exists around

Q6. For which of the following ‘ampere second’ could be the unit?

Q7. The impulse response of system is \(c (t) = – te^{– t} + 2e^{– t} (t > 0)\). Its closed loop transfer function is

Q8. A system is stable for

Q9. The damping ratio of a system having the characteristic equation (\( s^2\) + 2\(s\) + 8) = 0 is

Q10. The Nyquist plot for a control system encircles the critical point at (-1, j0). What can be concluded about the system's stability?

Quiz

Year 2025

January Week # 2 Expire on 07 Feb 2025

January Week # 3 Expire on 14 Feb 2025

January Week # 4 Expire on 21 Feb 2025

February Week # 1 Expire on 28 Feb 2025

February Week # 1 Quiz 3

Q1. Two-wattmeter method is used to measure the power in a three phase load. The wattmeter readings are 375 W and –50 W. Calculate the total active power.

Q2. Two electric lamps have filaments of the same metal having the same thickness. If one of them gives 100 watt and other gives 500 watt across the same supply, then:

Q3. At time \(t=0_+\), with zero initial condition, which of the following acts as an open circuit?

Q4. Branch of a tree is called a ________.

Q5. A magnetic field exists around

Q6. For which of the following ‘ampere second’ could be the unit?

Q7. The impulse response of system is \(c (t) = – te^{– t} + 2e^{– t} (t > 0)\). Its closed loop transfer function is

Q8. A system is stable for

Q9. The damping ratio of a system having the characteristic equation (\( s^2\) + 2\(s\) + 8) = 0 is

Q10. The Nyquist plot for a control system encircles the critical point at (-1, j0). What can be concluded about the system's stability?

Record & Track Your Performance

February
Week # 1 Quiz 3