[amp_mcq option1=”Change in ICBO” option2=”Change in VCC” option3=”Change in the values of circuit resistance” option4=”None of the above” correct=”option1″]
Detailed SolutionWhen the temperature changes, the operating point is shifted due to .
Transistors
12. A transistor is a ___________ operated device
[amp_mcq option1=”current” option2=”voltage” option3=”both voltage and current” option4=”none of the above” correct=”option3″]
Detailed SolutionA transistor is a ___________ operated device
13. A heat sink is generally used with a transistor to ___________
[amp_mcq option1=”increase the forward current” option2=”decrease the forward current” option3=”compensate for excessive doping” option4=”prevent excessive temperature rise” correct=”option4″]
Detailed SolutionA heat sink is generally used with a transistor to ___________
14. BC 147 transistor indicates that it is made of ___________
[amp_mcq option1=”germanium” option2=”silicon” option3=”carbon” option4=”none of the above” correct=”option2″]
Detailed SolutionBC 147 transistor indicates that it is made of ___________
15. The value of VBE ___________
[amp_mcq option1=”Depends upon IC to moderate extent” option2=”Is almost independent of IC” option3=”Is strongly dependant on IC” option4=”None of the above” correct=”option2″]
16. The leakage current in a silicon transistor is about ___________ the leakage current in a germanium transistor
[amp_mcq option1=”One hundredth” option2=”One tenth” option3=”One thousandth” option4=”One millionth” correct=”option1″]
17. At parallel resonance, the line current is ___________
[amp_mcq option1=”Minimum” option2=”Maximum” option3=”Quite large” option4=”None of the above” correct=”option1″]
Detailed SolutionAt parallel resonance, the line current is ___________
18. Tuned class C amplifiers are used for RF signals of ___________
[amp_mcq option1=”Low power” option2=”High power” option3=”Very high power” option4=”None of the above” correct=”option2″]
Detailed SolutionTuned class C amplifiers are used for RF signals of ___________
19. The current IB is ___________
[amp_mcq option1=”electron current” option2=”hole current” option3=”donor ion current” option4=”acceptor ion current” correct=”option1″]
20. The operating point ___________ on the a.c. load line
[amp_mcq option1=”Also line” option2=”Does not lie” option3=”May or may not lie” option4=”Data insufficient” correct=”option1″]
Detailed SolutionThe operating point ___________ on the a.c. load line