AIEEE 2005 | Alternating Current Question 170 | Physics

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

$$8\mu F$$

$$4\mu F$$

$$2\mu F$$

$$1\mu F$$

AIEEE 2005

MCQ (Single Correct Answer)

-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?

$$R,L$$

$$C$$ alone

$$L$$ alone

$$L, C$$

AIEEE 2005

MCQ (Single Correct Answer)

-1

A circuit has a resistance of $$12$$ $$ohm$$ and an impedance of $$15$$ $$ohm$$. The power factor of the circuit will be

$$0.4$$

$$0.8$$

$$0.125$$

$$1.25$$

AIEEE 2004

MCQ (Single Correct Answer)

-1

In an $$LCR$$ series $$a.c.$$ circuit, the voltage across each of the components, $$L,C$$ and $$R$$ is $$50V$$. The voltage across the $$L.C$$ combination will be :

$$100V$$

$$50\sqrt 2 $$

$$50$$ $$V$$

$$0$$ $$V$$ (zero)

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