AC exercise solution HSC

Chapter 13: AC Circuits
EXERCISES [PAGES 304 - 305]

Exercises | Q 1.1 | Page 304
Choose the correct option.
If the rms current in a 50 Hz AC circuit is 5A, the value of the current 1/300 seconds
after its value becomes zero is




SOLUTION




Exercises | Q 1.2 | Page 304
Choose the correct option.
A resistor of 500 Ω and inductance of 0.5 H is in series with an AC source which is
given by V = 1002 sin (1000 t). The power factor of the combination is

,SOLUTION




Exercises | Q 1.3 | Page 304
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In a circuit L, C and R are connected in series with an alternating voltage of frequency f.
the current leads the voltage by 450. The value of C is

, SOLUTION




Exercises | Q 1.4 | Page 304

Choose the correct option.
In an AC circuit, e and i are given by e = 150 sin (150t) V and i = 150


sin A. the power dissipated in the circuit is
1. 106W
2. 150W
3. 5625W
4. Zero

SOLUTION