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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 19
46.
Radiation efficiency of an antenna is defined as the ratio of
Total power radiated by an antenna to the net power accepted by the antenna from the connected transmitter
The frequency at which minimum power is radiated to the frequency at which maximum power is radiated
Total power accepted from the transmitter to total power generated by the transmitter
Power in main lobe to that in the side lobe
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
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:
1 only
2 only
2 and 3
3 and 4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Which of the following meters requires an external power source for its operation?
P.M.M.C. meter
Hot wire ammeter
Electronic voltmeter
Electrodynamometer
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Which are of the following oscillators is well suited for the generation of wide range audio-frequency sine waves?
RC phase-shift oscillator
Wien-bridge oscillator
Colpitts oscillator
Hartley oscillator
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
The transfer function of a controller is given as Kp + Kd.s where Kp and Kd are constants. What type of controller is this?
Proportional
Proportional plus integral
Proportional plus derivative
Integral plus derivative
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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