1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The self inductance of the motor of an electric fan is $$10$$ $$H$$. In order to impart maximum power at $$50$$ $$Hz$$, it should be connected to a capacitance of
A
$$8\mu F$$
B
$$4\mu F$$
C
$$2\mu F$$
D
$$1\mu F$$
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A coil of inductance $$300$$ $$mH$$ and resistance $$2\,\Omega $$ is connected to a source of voltage $$2$$ $$V$$. The current reaches half of its steady state value in
A
$$0.1$$ $$s$$
B
$$0.05$$ $$s$$
C
$$0.3$$ $$s$$
D
$$0.15$$ $$s$$
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A circuit has a resistance of $$12$$ $$ohm$$ and an impedance of $$15$$ $$ohm$$. The power factor of the circuit will be
A
$$0.4$$
B
$$0.8$$
C
$$0.125$$
D
$$1.25$$
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The phase difference between the alternating current and $$emf$$ is $${\pi \over 2}.$$ Which of the following cannot be the constituent of the circuit?
A
$$R,L$$
B
$$C$$ alone
C
$$L$$ alone
D
$$L, C$$
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