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Which of the following statement is inc...

Which of the following statement is incorrect :

A

Both ac and dc dynamo have a field magnet

B

Both ac and dc dynamo have an armature

C

Both ac and dc dynamo convert mechnical energy into electrical energy

D

Both ac and dc dynamo have slip rings

Text Solution

Verified by Experts

The correct Answer is:
D
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VMC MODULES ENGLISH-ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT -ENABLE
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  2. When speed of a DC generator decreases, the armature current

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  3. Which of the following statement is incorrect :

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  4. An alternating voltage E = 200sqrt 2sin(100t) is connected to a muF ca...

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  5. An AC circuit consists of an inductor of inductance 0.5H and a capacit...

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  6. The average power dissipated in a pure capacitance AC circuit is

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  7. In a region of unform magnetic induction B=10^(-2) T, a circulr coil ...

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  8. An inductive circuit a resistance of 10ohm and an inductance of 2.0 h...

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  9. In a LCR circuit having L=8.0 henry, C=0.5 mu F and R=100 ohm in serie...

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  10. In a series resonant L-C-R circuit, the capacitance is changed from C ...

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  11. A 120 volt AC source is connected across a pure inductor of inductance...

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  12. A generator produces a time varying voltage given by V=240 sin 120 t, ...

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  13. A sinusoidal ac current flows through a resistor of resistance R . If ...

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  14. A 40Omega electric heater is connected to a 200 V , 50 Hz mains supply...

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  15. The rms value of an AC of 50Hz is 10 A. the time taken by an alternati...

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  16. The root mean square value of the alternating current is equal to

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  17. The potential differences V and the current i flowing through an instr...

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  18. In an AC circuit , the potential difference V and current I are given ...

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  19. Alternating current can not be measured by D.C. Ammeter because

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