1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A charged particle of mass $$m$$ and charge $$q$$ travels on a circular path of radius $$r$$ that is perpendicular to a magnetic field $$B.$$ The time taken by the particle to complete one revolution is
A
$${{2\pi {q^2}B} \over m}$$
B
$${{2\pi mq} \over B}$$
C
$${{2\pi m} \over {qB}}$$
D
$${{2\pi qB} \over m}$$
2
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
$$1\mu F$$
3
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
$$0.15$$ $$s$$
4
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
$$1.25$$
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