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VMC MODULES ENGLISH-ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT -IMPECCABLE
- A transformer has an efficiency of 80%. It works at 4 kW and 100 V. If...
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- In a step - down transformer, the number of turns in
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- A step-up transformer operates on a 230 V line and supplies a current ...
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- Use of eddy is done on the following except :
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- By what percentage the impedance in an AC series circuit should be inc...
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- For high frequency, a capacitor offers
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- A six pole generotar with fixed field excitation developes an e.m.f. o...
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- Voltage in the secondary coil of a transfomer does not depend upon
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- When power is drawn from the secondary coil of the transformer, the dy...
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- What will increase in step-down transformer?
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- In a step up transformer the turn ratio is 1 : 2. A Leclanche cell (e...
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- The e.m.f. induced in a secondary coil is 20000 V when the current bre...
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- Two coils are wound on the same iron rod so that the flux generat...
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- A current of 5A is flowing at 220V in the primary coil of a transforme...
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- A transformer has 1500 turns in the primary coil and 1125 turns in th...
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- An electric generator is based on :
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- The primary and secondary coils of a transforme have 50 and 1500 turns...
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- In any AC circuit the emf (e) and the current (i) at any instant are g...
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- Alternating current can not be measured by dc ammeter because :
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- In step-up transfomer, the relation between number of turns in primary...
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