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The core of a transformer is laminated t...

The core of a transformer is laminated to reduce

A

eddy current loss

B

hysteresis loss

C

copper loss

D

magnetic loss

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The correct Answer is:
A
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The core of any transformer is laminated so as to

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Assertion : When a current flows in the coil of a transformer then its core becomes hot. Reason : The core of transformer is made of softiron.

RESONANCE ENGLISH-ALTERNATING CURRENT-Exercise -1 Part-1
  1. An alternating voltage E=200sqrt(2)sin(100t) is connected to a 1 micro...

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  2. When 100 V DC is applied across a solenoid, a steady current of 1 A fl...

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  3. In an L-C-R circuit the AC voltage across R, L and C comes out as 10 V...

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  4. In the series L-C-R circuit , the voltmeter and ammeter readings are

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  5. For a series LCR circuit the power loss at resonance is : -

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  6. A series LCR circuit containing a resistance of 120 ohm has angular re...

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  7. In an LCR circuit, the capacitance is made one-fourth, when in resonan...

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  8. An inductance L , a capacitor of 20muF and a resistor of 10Omega are c...

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  9. A resistor R, an inductor L, a capacitor C and voltmeters V(1),V(2) an...

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  10. A power transformer (step up) with an 1:8 turns ratio has 60 Hz,120 V ...

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  11. A trensformer is used to light 140 W, 24 V lamp from a 240 V ac mains...

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  12. In a step-up transformer the voltage in the primary is 220 V and the c...

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  13. The core of a transformer is laminated to reduce

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  14. A capacitor is a perfect insulator for

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  15. A choke coil has

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  16. A choke coil is preferred to a rheostate in AC circuit as

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  17. With increase in frequency of an AC supply, the inductive reactance:

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  18. With increase in frequency of an AC supply, the capacitive reactance:

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  19. An AC ammeter is used to measure current is a circuit . When a given d...

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  20. In an a.c. circuit consisting of resistance R and inductance L, the vo...

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