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Q1. | Form factor for a sine wave is |

A. | 1.414 [Wrong Answer] |

B. | 0.707 [Wrong Answer] |

C. | 1.11 [Correct Answer] |

D. | 0.637 [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ The best place to install a capacitor is

Very near to inductive load

Across the terminals of the inductive load

Far away from the inductive load

Any where

⇒ In an A.C. circuit, a low value of kVAR compared with kW indicates

Low efficiency

High power factor

Unity power factor

Maximum Load current

⇒ For a sine wave with peak value E

_{max}the average value is

0.636 E

_{max}

0.707 E

_{max}

0.434 E

_{max}

1.414 E

_{max}

⇒ The capacitors for power factor correction are rated in terms of

Voltage

VA

kW

kVAR

⇒ In a circuit containing R, L and C, power loss can take place

C only

L only

R only

All of the above

⇒ For a sine wave with peak value I

_{max}the r.m.s. value is

0.5 I

_{max}

0.707 I

_{max}

0.9 I

_{max}

1.414 I

_{max}

⇒ The power consumed in a circuit element will be least when the phase difference between the current and voltage

180°

90°

60°

0°

⇒ Two waves of the same frequency have opposite phase when the phase angle between them is

360°

180°

90°

0°

⇒ For the same peak value, which of the following wave has the least mean value ?

Half wave rectified sine wave

Triangular wave

Sine wave

Square wave

⇒ In a series resonant circuit, the impedance of the circuit is

Maximum

Minimum

Zero

Infinite

⇒ The time period of a sine wave is 1/50 seconds. Its frequency is

20 Hz

30 Hz

40 Hz

50 Hz

⇒ Inductance affects the direct current flow

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Only at the time of turning on

At the time of turning on and off

At all the time of operation

⇒ The r.m.s. value of a half-wave rectified current is 100 A. Its value for full-wave rectification would be____ amperes.

141.4

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40/π

⇒ The time constant of a series R-C circuit is given by

R/C

RC

^{2}

RC

R

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⇒ The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of____ degrees

90

60

45

30

⇒ The period of a wave is

The same as frequency

Time required to complete one cycle

Expressed in amperes

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⇒ While drawing vector diagram for a series circuit the reference vector is

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Phase angle

⇒ The unit of frequency of an A.C. signal is

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Hertz

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⇒ In A.C. circuit laminated iron is invariably used in order to

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Increase heat radiation

Make assembly cheap and easier

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⇒ In a parallel R-C circuit, the current always ____the applied voltage.

Lags

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Remains in phase with

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⇒ The negative maximum of a cosine wave occurs at

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45

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⇒ Capacitive reactance is more when

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Capacitance is less and frequency of supply is more

Capacitance is more and frequency of supply is less

Capacitance is more and frequency of supply is more

⇒ The power factor of incandescent bulb is

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0.8 leading

Unity

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⇒ Power factor of electric bulb is

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Leading

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⇒ Which of the following is not a non-linear element ?

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Heater coil

Diode

Electric arc with unlike electrodes

⇒ The double energy transient occur in the

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⇒ The shunt element in a band pass filter is

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Series combination of L and C

⇒ The product of apparent power and cosine of the phase angle between circuit voltage and current is

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⇒ The power taken by a 3-Φ load is given by the expression

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3 V

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_{L}sinΦ

3 V

_{L}I

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