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Q1. | The best place to install a capacitor is |

A. | Very near to inductive load [Wrong Answer] |

B. | Across the terminals of the inductive load [Correct Answer] |

C. | Far away from the inductive load [Wrong Answer] |

D. | Any where [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ 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

⇒ A sine wave of voltage varies from zero to maximum of 200 V. How much is the voltage at the instant of 30° of the cycle ?

50V

82.8V

100V

173.2 V

⇒ The r.m.s. value of pure cosine function is

0.5 of peak value

0.707 of peak value

Same as peak value

Zero

⇒ Selectivities of different resonance circuits are compared in terms of their

Impedances

Reactances

Frequencies

Band widths

⇒ For 200 V r.m.s. value triangular wave, the peak voltage will be

200 V

222 V

282 V

346 V

⇒ Ohm is the unit of all of the following except

Inductive reactance

Capacitive reactance

Resistance

Capacitance

⇒ In the R - L - C containing R = 4.5ω L = 0.06 H,C = 0.6 µF the power factor will be

Zero

Lagging

Leading

Unity

⇒ The series element of a band stop filter is

Capacitive

Inductive

Parallel combination of L and C

Series combination of L and C

⇒ A coil with large distributed capacitance has a

High resonant frequency

Low resonant frequency

Low quality factor

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⇒ At half power points of a resonance curve, the current is____ times the maximum current.

1/2

1/ √2

√2

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⇒ All the rules and laws of D.C. circuit also supply to A.C. circuit containing

Capacitance only

Inductance only

Resistance only

All above

⇒ The value of operator j2 is equal to

Zero

+1

-1

√-1

⇒ In A.C. circuit the power curve is a sine wave having

Double the frequency of voltage

Same frequency as that of voltage

Half the frequency of the voltage

None of these

⇒ The shunt element in a band pass filter is

Capacitive

Inductive

Parallel combination of L and C

Series combination of L and C

⇒ A resonance curve for a series circuit is a plot of frequency versus

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Voltage

Impedance

Reactance

⇒ 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 shunt element of prototype high pass filter is

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Inductive

Capacitive

Combination of L and C

⇒ 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

⇒ Power factor of electric bulb is

Zero

Lagging

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Unity

⇒ Poor power factor results in all of the following EXCEPT.

Overloading of transformers

Overloading of altemators

Reduction in power losses

Reduction in load handling capacity of electrical system

⇒ At____ frequencies the parallel R-L circuit behaves as purely resistive.

Low

Very low

High

Very high

⇒ Which of the following waves has the highest value of peak factor '?

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Triangular wave

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

180°

90°

60°

0°

⇒ 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 r.m.s. value and mean value is the same in the case of

Triangular wave

Sine wave

Square wave

Half wave rectified sine wave

⇒ 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

⇒ 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

⇒ For the full wave rectified sine wave the r.m.s. value is

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_{max}

0.636 I

_{max}

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_{max}

Zero

⇒ The negative maximum of a cosine wave occurs at

30

45

90

180

⇒ At very low frequencies a series R-C circuit behaves as almost purely____

Resistive

Inductive

Capacitive

None of these