The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces

AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces

None of these

The same heat as produced by A.C. when flowing through the same circuit

The less heat than produced by A.C. flowing through the same circuit

The more heat than produced by A.C. when flowing through the same circuit

None of these

The same heat as produced by A.C. when flowing through the same circuit

The less heat than produced by A.C. flowing through the same circuit

The more heat than produced by A.C. when flowing through the same circuit

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AC Fundamentals, Circuit and Circuit Theory
Magnitude of current at resonance in R-L-C circuit

Depends upon the magnitude of L

Depends upon the magnitude of C

Depends upon the magnitude of R, Land C

Depends upon the magnitude of R

Depends upon the magnitude of L

Depends upon the magnitude of C

Depends upon the magnitude of R, Land C

Depends upon the magnitude of R

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AC Fundamentals, Circuit and Circuit Theory
If a sinusoidal wave has frequency of 50 Hz with 30 A r.m.s. current which of the following equation represents this wave?

42.42 sin 314 t

84.84 sin 25 t

30 sin 50 t

60 sin 25 t

42.42 sin 314 t

84.84 sin 25 t

30 sin 50 t

60 sin 25 t

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AC Fundamentals, Circuit and Circuit Theory
Form Factor is the ratio of

r.m.s. value/average value

Average value/r.m.s. value

r.m.s. value/peak value

Average value/peak value

r.m.s. value/average value

Average value/r.m.s. value

r.m.s. value/peak value

Average value/peak value

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AC Fundamentals, Circuit and Circuit Theory
All definitions of power factor of a series R-L-C circuit are correct except

Ratio of net reactance and impedance

Ratio of J and Z

Ratio of kW and kVA

Ratio of W and VA

Ratio of net reactance and impedance

Ratio of J and Z

Ratio of kW and kVA

Ratio of W and VA

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AC Fundamentals, Circuit and Circuit Theory
The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes __________ ohms.

5

15

10

2.5

5

15

10

2.5

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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces

AC Fundamentals, Circuit and Circuit Theory Magnitude of current at resonance in R-L-C circuit

AC Fundamentals, Circuit and Circuit Theory If a sinusoidal wave has frequency of 50 Hz with 30 A r.m.s. current which of the following equation represents this wave?

AC Fundamentals, Circuit and Circuit Theory Form Factor is the ratio of

AC Fundamentals, Circuit and Circuit Theory All definitions of power factor of a series R-L-C circuit are correct except

AC Fundamentals, Circuit and Circuit Theory The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes __________ ohms.

AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces

AC Fundamentals, Circuit and Circuit Theory
Magnitude of current at resonance in R-L-C circuit

AC Fundamentals, Circuit and Circuit Theory
If a sinusoidal wave has frequency of 50 Hz with 30 A r.m.s. current which of the following equation represents this wave?

AC Fundamentals, Circuit and Circuit Theory
Form Factor is the ratio of

AC Fundamentals, Circuit and Circuit Theory
All definitions of power factor of a series R-L-C circuit are correct except

AC Fundamentals, Circuit and Circuit Theory
The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes __________ ohms.