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Electronics Mechanic Practice Test: Radio Receiver And Transmitter
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Electronics Mechanic Practice Test: Radio Receiver And Transmitter
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25 Questions

1. If a mechanic fails in aligning the I.F. of a radio receiver then the possible fault may be
2. If a receiver is dead', one of the possible fault is—
3. The I.F. of an AM radio receiver is generally kept —
4. If the stations at the high frequency end of the dial are weak then the fault lies in —
5. An A F transistor is found defective, its electrodes may have become —
6. What is the cause of excessive hum' in a mains operated radio receiver —
7. The full form of TRF Receiver is —
8. The output of a mixer stage is —
9. I.F. alignment is done by setting —
10. A gang capacitor is said to be defective if —
11. In a MW radio receiver, the stations are received with a noise. It may be due to —
12. What will happen if the ground terminal of the gang capacitor becomes open ?
13. If d.c. supply is not reaching the receiver, the fault exists in —
14. The function of an I.F. transformer is to —
15. The frequency converter stage of a radio receiver consists of —
16. If a radio broadcasting station is heard clearly but at a wrong position on the dial then the fault lies
17. Medium wave band allotted for AM broadcasting is —
18. The selectivity of a radio receiver is defined as ability of the receiver of —
19. For increasing the selectivity of a radio receiver—
20. No station is heard on a radio receiver, only noise is heard, it is due to short-circuited
21. If the audio output of a radio receiver is low then the possible fault may be —
22. The cause of motor boating defect in a radio receiver is —
23. If a pre-amplifier has a very low gain, the possible fault may be —
24. Why an I.F. is chosen between 450 to 470 kHz in AM radio receivers ?
25. What is the possible fault if a receiver operates satisfactorily with a battery eliminator but not with a battery

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