Govt Exams Mock Test FREE | Online Quiz Competition

Q1. In two wattmeter method of power measurement, one of the wattmeters will show negative reading when the load power factor angle is strictly

Greater than \(60^\circ\)

Less than \(60^\circ\)

Greater than \(30^\circ\)

Less than \(30^\circ\)

Q2. In the measurement of power using two wattmeter method, when the power factor is unity

One of the wattmeters will read zero.

Both the wattmeters will read maximum.

Both the wattmeters will read positive and equal.

Both the wattmeters will read minimum.

Q3. The energy stored in the magnetic field of solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying current of 10 A is

0.015 J

0.5 J

0.15 J

1.15 J

Q4. In two Wattmeter method if one of the wattmeter reads twice that of the other, then

Power factor is unity

Phase angle is 30 degree lag

Power factor is zero

None of the above

Q5. If each branch of a delta circuit head impedance \(\sqrt3Z\), then each branch of the equivalent star circuit has impedance

\(\frac{Z}{\sqrt3}\)

\(3Z\)

3\(\sqrt3Z\)

\(\frac{Z}{3}\)

Q6. An electric bulb rated 100 Watt, 240 V is connected to a 180 V supply. What will be the output of the bulb?

Approx 76 Watt

Approx 46 Watt

Approx 56 Watt

Approx 100 Watt

Q7. A series R-L-C circuit has a resonant frequency of \(1000 Hz\), If the values of R, L and C are doubled, the new resonant frequency is __________.

\(1000 Hz\)

\(500 Hz\)

\(250 Hz\)

\(2000 Hz\)

Q8. Consider the following statements regarding measurement of three phase power by two wattmeter method; one of the wattmeter reads negative reading which implies that

power factor is less than 0.5

power flow is in reverse direction

load is unbalanced

power factor is greater than 0.5

Q9. A rectangular conductor is 1.6 inches wide and 0.25 inch thick. What is its area in square mils?

4000 square mils

40000 square mils

400000 square mils

400 square mils

Q10. 2 ohms resistor having 1 Ampere current will dissipate power of

2 Watts

2 Joules

1 Watt

1 Joule

Quiz

Year 2025

December
Week # 1 Quiz 1

Q1. In two wattmeter method of power measurement, one of the wattmeters will show negative reading when the load power factor angle is strictly

Q2. In the measurement of power using two wattmeter method, when the power factor is unity

Q3. The energy stored in the magnetic field of solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying current of 10 A is

Q4. In two Wattmeter method if one of the wattmeter reads twice that of the other, then

Q5. If each branch of a delta circuit head impedance \(\sqrt3Z\), then each branch of the equivalent star circuit has impedance

Q6. An electric bulb rated 100 Watt, 240 V is connected to a 180 V supply. What will be the output of the bulb?

Q7. A series R-L-C circuit has a resonant frequency of \(1000 Hz\), If the values of R, L and C are doubled, the new resonant frequency is __________.

Q8. Consider the following statements regarding measurement of three phase power by two wattmeter method; one of the wattmeter reads negative reading which implies that

Q9. A rectangular conductor is 1.6 inches wide and 0.25 inch thick. What is its area in square mils?

Q10. 2 ohms resistor having 1 Ampere current will dissipate power of

Quiz

Year 2025

December Week # 3 Expire on 14 Jan 2025

December Week # 4 Expire on 21 Jan 2025

January Week # 1 Expire on 31 Jan 2025

January Week # 2 Expire on 07 Feb 2025

December Week # 1 Quiz 1

Q1. In two wattmeter method of power measurement, one of the wattmeters will show negative reading when the load power factor angle is strictly

Q2. In the measurement of power using two wattmeter method, when the power factor is unity

Q3. The energy stored in the magnetic field of solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying current of 10 A is

Q4. In two Wattmeter method if one of the wattmeter reads twice that of the other, then

Q5. If each branch of a delta circuit head impedance \(\sqrt3Z\), then each branch of the equivalent star circuit has impedance

Q6. An electric bulb rated 100 Watt, 240 V is connected to a 180 V supply. What will be the output of the bulb?

Q7. A series R-L-C circuit has a resonant frequency of \(1000 Hz\), If the values of R, L and C are doubled, the new resonant frequency is __________.

Q8. Consider the following statements regarding measurement of three phase power by two wattmeter method; one of the wattmeter reads negative reading which implies that

Q9. A rectangular conductor is 1.6 inches wide and 0.25 inch thick. What is its area in square mils?

Q10. 2 ohms resistor having 1 Ampere current will dissipate power of

Record & Track Your Performance

December
Week # 1 Quiz 1