At parallel resonancea the currents flowing through L and C are

Question

At parallel resonancea the currents flowing through L and C are

B. Zero

D. Equal

Correct Answer :

D. Equal

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What is the half-power bandwidth of a parallel resonant circuit which has a resonant frequency of 3.6 MHz and Q of 218?

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At what frequency will an inductor of 5mH have the same reactance as a capacitor of 0.1 F?

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A capacitance of 6 ��F means

A. 6 pF

B. 6 nF

C. 6 fF

D. 6 aF

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What is the reciprocal of quality factor?

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When two pure sine waves of the same frequency and the same amplitude which are exactly 180� outof-phase are added togethera the result is

Discuss this answer

Which waveform in which the rms value and the mean value are equal?

Discuss this answer

In a pure capacitancea

Discuss this answer

Inductive reactance applies only to sine waves because it

Discuss this answer

The ohmic value of a resistor with negative temperature coefficient

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If three 9 mH inductors are connected in parallel without mutual inductance then the total i nductance is

A. 3 mH

B. 9 mH

C. 27mH

D. 18 mH

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When capacitors are connected in seriesa the total capacitance is

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What is the peak factor for alternating current or voltage varying sinusiodally?

A.

B.

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The ratio of W/VA in an ac circuit means

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If an emf in circuit A produces a current in circuit Ba then the same emf in circuit Bproduces the same current in circuit ? this theorem is known as

Discuss this answer

Which of the following is not a factor affecting capacitance oor?

Discuss this answer

A capacitor is used to

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Barium-strontium titanite dielectric material is also called

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An inductor carries 2 A dc. If its inductance is 100 Ha then what is its inductive reactance?

A. Zero

B. 1.3 k

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Which of the following does not generally affect the value of a capacitor?

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Which of the statements below is not true?

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Which of the following dielectric materials makes the highest-capacitance capacitor?

A. Air

C. Mica

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What is the conductance of a circuit having three 10 resistors in parallel?

A. 0.3 S

B. 3.33 S

C. 0.33 S

D. 30 S

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The average value of a triangular or sawtooth wave is _____ times its peak value.

A.

B.

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Of the equivalent combination of unitsa which one is not equal to watt?

A. 2/V

B. AV

C. A2

D. J/s

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Under the conditions of maximum power transfera a voltage source is delivering a power of 15 W to the load. What is the power generated by the source?

A. 60 W

B. 30 W

C. 15 W

D. 4 W

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A wire of one kilometre length has a resistance of 20 . If the length is halveda then the new resistance is ___ the original resistance.

A. Half

B. Twice

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What maximum voltage can be applied across the capacitor of time?

Discuss this answer

At parallel resonancea the currents flowing through L and C are

B. Zero

D. Equal

Discuss this answer

Effects of capacitance

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If voltage across the plates of 2 F capacitor is increased by 4 Va then charge on the plates will

Discuss this answer

Answer 1

A. Infinite

Answer 2

C. Unequal

Answer 3

A. 1.65 kHz

Answer 4

B. 16.5 MHz

Answer 5

C. 16.5 kHz

Answer 6

D. 165 kHz

Answer 7

A. 7.12 kHz

Answer 8

B. 7.12 Hz

Answer 9

C. 7.12MHz

Answer 10

D. 7.12 GHz

Answer 11

A. Power factor

Answer 12

B. Reactive factor

Answer 13

C. Dissipation factor

Answer 14

D. 1/Q factor

Answer 15

A. A wave with twice the amplitude

Answer 16

B. A wave with half the amplitude

Answer 17

C. Zero signal

Answer 18

D. A wave with twice the frequency

Answer 19

A. Square wave

Answer 20

B. Triangular wave

Answer 21

C. Sine wave

Answer 22

D. Sawtooth

Answer 23

A. Current leads voltage by 90�

Answer 24

B. Current leads voltage by 180�

Answer 25

C. Current lags voltage by 90�

Answer 26

D. Current lags voltage by 180�

Answer 27

A. Increases with lower frequencies

Answer 28

B. Increases with lower inductance

Answer 29

C. Depends on the factor 2

Answer 30

D. Decreases with higher frequencies

Answer 31

A. Increases with increasing temperature

Answer 32

B. Increase with decreasing temperature

Answer 33

C. Stays unchanged with temperature change

Answer 34

D. Stays unaffected even with increasing temperature

Answer 35

A. Smaller than the smallest capacitor

Answer 36

B. Smaller than the largest capacitor

Answer 37

C. Greater than any of the capacitor

Answer 38

D. Greater than the largest capacitor

Answer 39

A. Power factor

Answer 40

B. Reactive factor

Answer 41

C. Quality factor

Answer 42

D. Load factor

Answer 43

A. Maximum power transfer theorem

Answer 44

B. Millman�s theorem

Answer 45

C. Reciprocity theorem

Answer 46

D. Norton�s theorem

Answer 47

A. Area of plates

Answer 48

B. Number of plates

Answer 49

C. Distance between plates

Answer 50

D. Dielectric material used

Answer 51

A. Block dc current

Answer 52

B. Pass dc current

Answer 53

C. Open voltage source

Answer 54

D. Short the voltage source

Answer 55

A. Ceramic

Answer 56

B. Polyster

Answer 57

C. Electrolytic

Answer 58

D. Bakelite

Answer 59

A. The dielectric material used

Answer 60

B. The surface area of the plates

Answer 61

C. The thickness of the dielectric

Answer 62

D. The voltage applied to the plate

Answer 63

A. Current source is an active element

Answer 64

B. Resistor is a linear element

Answer 65

C. Voltage source is a passive element

Answer 66

D. Diode is a non-linear element

Answer 67

B. Barium-strontium titanite

Answer 68

D. Electrolyte

Answer 69

C. One-fourth

Answer 70

D. Three times

Answer 71

A. Working voltage

Answer 72

B. Surge voltage

Answer 73

C. Stray voltage

Answer 74

D. Peak voltage

Answer 75

A. Infinite

Answer 76

C. Unequal

Answer 77

A. It opposes any change in the amount of voltage

Answer 78

B. Voltage is lagged behind the current by a quarter cycle

Answer 79

C. Electric energy is stored in the capacitor in the form of electrostatic field

Answer 80

D. All of the above

Answer 81

A. Decrease by 2 C

Answer 82

B. Increase by 2 C

Answer 83

C. Decrease by 4 C

Answer 84

D. Increase by 4C

At parallel resonancea the currents flowing through L and C are

Correct Answer :

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Related Questions

What is the half-power bandwidth of a parallel resonant circuit which has a resonant frequency of 3.6 MHz and Q of 218?

At what frequency will an inductor of 5mH have the same reactance as a capacitor of 0.1 F?

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What is the peak factor for alternating current or voltage varying sinusiodally?

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Which of the following does not generally affect the value of a capacitor?

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