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.Management Sciences
Category: Alternating Current
An inductor may store energy in ________________?
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A. Its electric field
B. Its coils
C. Its magnetic field
D. Both electric and magnetic fields
If capacitance of L-C circuit is made four times then frequency of the circuit becomes___________________?
A. Twice
B. One half
C. Four times
D. None
The value of the steady current which when flowing through the same resistor produces heat at the same rate as the mean rate of heat produced by the alternating current is__________________?
A. Average current
B. Sinusoidal current
C. r.m.s current
D. Net current
If a glass plate is inserted in between the plate of a capacitor in series with a lighted bulb the brightness of the bulb________________?
A. Remains same
B. Brightness increases
C. Brightness decreases
D. No light
The frequency of a circuit consisting of a capacitance C and a resistor R is________________?
A. C/R
B. R/C
C. 1/RC
D. 1/ 2RC
Electromagnetic waves travel in free space with the speed of___________________?
A. λ-rays
B. Positive rays
C. Cathode rays
D. More than sound waves
When a pure inductor of inductance L and a pure capacitor of capacitance C are connected in parallel to a sinusoidal potential difference V the potential difference across both L & C will be_______________?
A. Same
B. Different
C. At L will be more than at C
D. At L will be less than at C
Electromagnetic waves emitted from antenna are________________?
A. Stationary
B. Longitudinal
C. Transverse
D. All the above
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