A.C. Fundamentals | Circuits and Circuit Theory

Which of the following statements pertains to resistors only _____________?

Byadmin December 11, 2018July 18, 2021

Which of the following statements pertains to resistors only _____________?

A. can dissipate considerable amount of power
B. can act as energy storage devices
C. connecting them in parallel in¬creases the total value
D. oppose sudden changes in voltage

A.C. Fundamentals | Circuits and Circuit Theory

Time constant of a capacitive circuit__________?

Time constant of a capacitive circuit__________?

A. increases with the decrease of capacitance and decrease of resistance
B. increases with the decrease of capacitance and increase of resistance
C. increases with the increase of capacitance and decrease of resistance
D. increase with increase of capacitance and increase of resistance

Read More Time constant of a capacitive circuit__________?
A.C. Fundamentals | Circuits and Circuit Theory

A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to________?

A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to________?

A. the capacitive reactance in ohms
B. the current flowing in capacitor
C. the size of the capacitor being quite big
D. the statement is incorrect

Read More A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to________?
A.C. Fundamentals | Circuits and Circuit Theory

Capacitive reactance is more when_______?

Capacitive reactance is more when_______?

A. capacitance is less and frequency of supply is less
B. capacitance is less and frequency of supply is more
C. capacitance is more and frequency of supply is less
D. capacitance is more and frequency of supply is more

Read More Capacitive reactance is more when_______?
A.C. Fundamentals | Circuits and Circuit Theory

For a sine wave with peak value Imax the r.m.s. value is_______?

For a sine wave with peak value Imax the r.m.s. value is_______?

A. 0.5 Imax
B. 0.707
C. 0.9
D. 1.414 Lmax

Read More For a sine wave with peak value Imax the r.m.s. value is_______?
A.C. Fundamentals | Circuits and Circuit Theory

The inductance of a coil can be increased by_________?

The inductance of a coil can be increased by_________?

A. increasing core length
B. decreasing the number of turns
C. decreasing the diameter of the former
D. choosing core material having high relative permeability

Read More The inductance of a coil can be increased by_________?
A.C. Fundamentals | Circuits and Circuit Theory

All the rules and laws of D.C. circuit also apply to A.C. circuit containing_____________?

All the rules and laws of D.C. circuit also apply to A.C. circuit containing_____________?

A. capacitance only
B. inductance only
C. resistance only
D. all above

Read More All the rules and laws of D.C. circuit also apply to A.C. circuit containing_____________?

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