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1421. The process of converting an alternating current waveform into a direct current waveform is referred to as:



1422. A process in which only one half of alternating current is converted into direct current is called:



1423. Efficiency of full wave rectifier circuit is almost ------- than half wave rectifier circuit:



1424. Output current of a half wave rectifier is:



1425. The resistance of full wave rectifier is:



1426. When AC is converted to DC, the process is called:



1427. The primary purpose of rectification in an electrical circuit is to:



1428. Ripple factor of full wave rectifier is:



1429. The device which converts AC into DC current:



1430. A device that converts AC into DC is called:



1431. The conversion of alternating current into direct current is called:



1432. In full wave rectification, ------- diodes are used:



1433. The potential difference applied across a diode to reduce depletion layer is:



1434. Calculate the half-life of bismuth-214 which has a decay constant of 4.3 x 10^-1.



1435. Calculate the activity decaying atom per unit time of radioactive strontium-90 having 6.7 x 10^21 atoms at t=0. Decay constant of strontium-90 is 8.3 x 10^-10 s^-1.



1436. In relation λT1/2 = 0.693, which quantity is represented by λ?



1437. The half-life of Strontium (Sr) is 8.7 hours. Its decay constant is:



1438. The decay rate of radioactive substance is:



1439. An artificial radioactive element can be made by bombarding:



1440. If we have "No" number of any radioactive element then after a period of "n" half lives the number of atoms left behind is:



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