How the low power factor (P.F) can be improve in AC circuit?

By connecting capacitor in parallel

By connecting resistance in series.

By connecting capacitor in series.

By connecting inductor in series

By connecting capacitor in parallel

What relationship is illustrated in between the current and voltage?

Current and voltage are "in phase"

Current and voltage are in out of phase

Current lags behind the voltage

Current leads ahead of the voltage

Which AC circuit contains the phase relation between voltage (V) and current (I)?

Resistance and inductance circuit

Resistance and capacitance circuit

Resistance, inductance and capacitance circuit.

What is the purpose of phase sequence meter?

To ensure the correct phase sequence of 3 phase system

To control the speed of 3 phase motor.

To protect motor against short circuit fault

To indicate the incorrect phase sequence of 3 phase

To ensure the correct phase sequence of 3 phase system

A.C Fundamentals, Circuits and Circuit Theory Bank PO MCQ... Quiz

7.

In which condition resonance will occur in R-L-C series circuit?

Inductive reactance (XL) is zero

Inductive reactance (XL) is equal to capacitive reactance (XC).

Inductive reactance (XL) is greater then capacitive reactance (XC).

Inductive reactance (XL) is less than capacitive reactance (XC).

1.

Calculate the power by two wattmeter (W1 & W2) method, if one of the wattmeter (W2) reading is taken after reversing.

2.

What is the line voltage in 3 phase system if the phase voltage is 240V ?

3.

How the low power factor (P.F) can be improve in AC circuit?

4.

What relationship is illustrated in between the current and voltage?

5.

Which AC circuit contains the phase relation between voltage (V) and current (I)?

6.

What is the purpose of phase sequence meter?

7.

In which condition resonance will occur in R-L-C series circuit?

8.

In which 3 phase system, the artificial neutral is required to measure the phase voltage?

9.

Calculate the impedance of the circuit,R = 5 Ohm, XL = 36 Ohm, XC = 24 Ohm

10.

What is the resistance of the inductive coil takes 5 A current across 240V, 50 Hz supply at 0.8 power factor?

Time

1. Calculate the power by two wattmeter (W1 & W2) method, if one of the wattmeter (W2) reading is taken after reversing.

2. What is the line voltage in 3 phase system if the phase voltage is 240V ?

3. How the low power factor (P.F) can be improve in AC circuit?

4. What relationship is illustrated in between the current and voltage?

5. Which AC circuit contains the phase relation between voltage (V) and current (I)?

6. What is the purpose of phase sequence meter?

7. In which condition resonance will occur in R-L-C series circuit?

8. In which 3 phase system, the artificial neutral is required to measure the phase voltage?

9. Calculate the impedance of the circuit,R = 5 Ohm, XL = 36 Ohm, XC = 24 Ohm

10. What is the resistance of the inductive coil takes 5 A current across 240V, 50 Hz supply at 0.8 power factor?

Time

Report Question

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1.

Calculate the power by two wattmeter (W1 & W2) method, if one of the wattmeter (W2) reading is taken after reversing.

2.

What is the line voltage in 3 phase system if the phase voltage is 240V ?

3.

How the low power factor (P.F) can be improve in AC circuit?

4.

What relationship is illustrated in between the current and voltage?

5.

Which AC circuit contains the phase relation between voltage (V) and current (I)?

6.

What is the purpose of phase sequence meter?

7.

In which condition resonance will occur in R-L-C series circuit?

8.

In which 3 phase system, the artificial neutral is required to measure the phase voltage?

9.

Calculate the impedance of the circuit,R = 5 Ohm, XL = 36 Ohm, XC = 24 Ohm

10.

What is the resistance of the inductive coil takes 5 A current across 240V, 50 Hz supply at 0.8 power factor?