Exercise: Exam Question Papers

Questions for: Exam Question Papers

Compared to a p-n junction with NA = ND = 1014/cm3, which one of the following statements is TRUE for a p-n junction with NA = ND = 1020/cm3?
A:
Reverse breakdown voltage is lower and depletion capacitance is lower
B:
Reverse breakdown voltage is higher and depletion capacitance is lower
C:
Reverse breakdown voltage is lower and depletion capacitance is higher
D:
Reverse breakdown voltage is higher and depletion capacitance is higher
Answer: C
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The transfer function of a controller is given as Kp + Kd.s where Kp and Kd are constants. What type of controller is this?
A:
Proportional
B:
Proportional plus integral
C:
Proportional plus derivative
D:
Integral plus derivative
Answer: C
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Which are of the following oscillators is well suited for the generation of wide range audio-frequency sine waves?
A:
RC phase-shift oscillator
B:
Wien-bridge oscillator
C:
Colpitts oscillator
D:
Hartley oscillator
Answer: B
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Which of the following meters requires an external power source for its operation?
A:
P.M.M.C. meter
B:
Hot wire ammeter
C:
Electronic voltmeter
D:
Electrodynamometer
Answer: C
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Which of the following factors are responsible to design IC logic gates to operated at a fixed supply voltage of 5 volts?
  1. Low heating of IC logic gates
  2. Compatibility with other logic gates
  3. Satisfactory and safe operation
  4. Standardization from IC manufacturing point of view.
Select the correct answer from the codes given below:
A:
1 only
B:
2 only
C:
2 and 3
D:
3 and 4
Answer: C
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