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Mdcat-past-papers Quiz

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1381. On which principle does the transformer work?



1382. If a transformer has 500 turns on primary coil and 250 turns on secondary coil, then:



1383. Induced EMF in A.C. generator can be increased by:



1384. The main function of a transformer is to convert:



1385. A generator supplies 100 V to the primary coil of transformer. The primary has 150 turns and the secondary has 500 turns. The secondary voltage is:



1386. "The emf induced in a closed circuit is directly proportional to the rate of change of magnetic flux passing through the circuit" refers to:



1387. Transformer works on the principle of:



1388. The efficacy of transformer is:



1389. Lenz's law is also a statement of law of conservation of:



1390. The induced emf will flow in such a direction so as to oppose the cause that produces it. It is statement of:



1391. The transformer depends on the use of:



1392. Transformer works on the principle of:



1393. The transformer depends on the use of:



1394. What is the inappropriate statement for step-up transformer?



1395. The current produced by a generator is called:



1396. Low voltage levels in an electrical circuit is called:



1397. The direction of induced current is determined by?



1398. Lenz's law is consistent with the:



1399. The basic principle behind the operation of the transformer is:



1400. Transformer is a device which steps up or down the input:



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