Govt Exams Mock Test FREE | Online Quiz Competition

Q1. In buck converter, the critical capacitance value of the capacitor 'C' connected across the load is

directly proportional to the switching frequency

inversely proportional to the square of the switching frequency

inversely proportional to the switching frequency

directly proportional to the square of the switching frequency

Q2. Which of the following statement is true about Thyristor?

The turn-off time of a thyristor is less than the turn-on time

The turn-on time is less than the turn-off time

The turn-off time for the line commutation is less than the forced commutation

None of the above

Q3. The typical ratio of latching current to holding current in a 20 A thyristor is

5

2

1

0.5

Q4. Which of the following terminals does not belong to the MOSFET?

Gate

Base

Drain

Source

Q5. What is the purpose of the DC link in a VFD?

To store electrical energy

To convert AC to DC

To step up the voltage

To filter and stabilize the DC voltage

Q6. Step down chopper is operated in the continuous conduction mode is steady state with the constant duty ratio \(D\). If \(V_o\) is the magnitude of the DC output voltage and if \(V_s\) is the magnitude of the DC input voltage, the ratio of \(\frac{V_o}{V_s}\) is given by

D

1-D

D/(1-D)

1/(1-D)

Q7. A single phase full bridge inverter can operate in load-commutation mode in case load consists of

RL

RLC overdamped

RLC underdamped

RLC critically damped

Q8. Voltage transformers are designed to have ............ magnetizing current and ............... magnetizing reactance.

high, low

high, high

low, low

low, high

Q9. A man holds both the terminals of a 500 V meggar, but is still safe due to

High voltage.

Very low current

High resistance of the body.

Low resistance of the body.

Q10. Tangent galvanometer is used to measure

Steady Current

Current Impulses

Magnetic Moments of Bar

Earth’s Magnetic Field

Quiz

Year 2025

February
Week # 4 Quiz 2

Q1. In buck converter, the critical capacitance value of the capacitor 'C' connected across the load is

Q2. Which of the following statement is true about Thyristor?

Q3. The typical ratio of latching current to holding current in a 20 A thyristor is

Q4. Which of the following terminals does not belong to the MOSFET?

Q5. What is the purpose of the DC link in a VFD?

Q6. Step down chopper is operated in the continuous conduction mode is steady state with the constant duty ratio \(D\). If \(V_o\) is the magnitude of the DC output voltage and if \(V_s\) is the magnitude of the DC input voltage, the ratio of \(\frac{V_o}{V_s}\) is given by

Q7. A single phase full bridge inverter can operate in load-commutation mode in case load consists of

Q8. Voltage transformers are designed to have ............ magnetizing current and ............... magnetizing reactance.

Q9. A man holds both the terminals of a 500 V meggar, but is still safe due to

Q10. Tangent galvanometer is used to measure

Quiz

Year 2025

February Week # 1 Expire on 28 Feb 2025

February Week # 2 Expire on 07 Mar 2025

February Week # 3 Expire on 14 Mar 2025

February Week # 4 Expire on 21 Mar 2025

February Week # 4 Quiz 2

Q1. In buck converter, the critical capacitance value of the capacitor 'C' connected across the load is

Q2. Which of the following statement is true about Thyristor?

Q3. The typical ratio of latching current to holding current in a 20 A thyristor is

Q4. Which of the following terminals does not belong to the MOSFET?

Q5. What is the purpose of the DC link in a VFD?

Q6. Step down chopper is operated in the continuous conduction mode is steady state with the constant duty ratio \(D\). If \(V_o\) is the magnitude of the DC output voltage and if \(V_s\) is the magnitude of the DC input voltage, the ratio of \(\frac{V_o}{V_s}\) is given by

Q7. A single phase full bridge inverter can operate in load-commutation mode in case load consists of

Q8. Voltage transformers are designed to have ............ magnetizing current and ............... magnetizing reactance.

Q9. A man holds both the terminals of a 500 V meggar, but is still safe due to

Q10. Tangent galvanometer is used to measure

Record & Track Your Performance

February
Week # 4 Quiz 2