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Mdcat-past-papers Quiz

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1401. Lenz's law is used to find the direction of:



1402. In step-up transformer, current across the secondary:



1403. Which is correct relation related to transformer?



1404. The device which increases or decreases the emf is called:



1405. The induced current will flow in such a direction that it opposes the cause producing it. The statement belongs to:



1406. Transformer works on the principle of:



1407. In Fleming's right rule, the thumb indicates:



1408. The Lenz's law is also statement of law of conservation of:



1409. An AC current generator is a device that converts:



1410. A transformer used on a 220V line delivers 22A at 1800V. What current is drawn from the line (assume 100% efficiency)?



1411. For rectification transformer used is:



1412. Output voltage of rectifier is not smooth; it can be made smooth by a circuit known as:



1413. What happens in positive cycle of AC input?



1414. In case of half wave rectification the resistance of diode during negative half of A.C is:



1415. The direction of current through the load resistance of a full wave rectification circuit:



1416. For the positive half cycle i.e. 0 → T/2, the diode D:



1417. The conversion of A.C into D.C is called rectification and circuit is called rectifier. Which component of electronics acts as a rectifier?



1418. Full wave rectification is given by:



1419. A diode characteristic curve is a plot between:



1420. A semiconductor diode can be used as:



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