Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 1

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For an $A C$ circuit containing inductor only as shown. The graph of inductive reactance $(X_{L})$ vs frequency $(f)$ of an $A C$ source is

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Important Questions on Alternating Current

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 2

In an

A C

circuit, only a resistor of resistance

15 Ω

is present. If voltage applied is

V = 150 \sin (50 t)

volt then rms current is

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 3

Electrical inertia of coil is

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 4

In a purely inductive circuit, the current:

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 5

The mean value of current

I = I_{0} \cos ω t

from

t = 0

to

t = \frac{π}{ω}

is

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 6

The current in an

A C

circuit is given by

I = I_{0} \sin (50 π) t,

where

t

is in second. The time interval in which it will reach from zero to its peak value is

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 7

A capacitor of capacitance

2 mF

and resistor of resistance

12 Ω

are connected in series with voltage source

V = (195 \sqrt{2} volts)

[\sin (100 rad s^{- 1}) t] .

The average power dissipated in the circuit will be

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 8

In an

A C

circuit as shown in the figure, the source is of

r m s

voltage

200 V

and variable frequency. At resonance, the circuit
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 9

A current of

2 A

is flowing at

220 V

in the primary coil of a transformer. If current in the secondary coil is

1 A

and efficiency of the transformer is

80 %

then the voltage produced in the secondary coil will be