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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 20
16.
Method of images is applicable to which fields?
Electrostatic fields only
Electrodynamic fields only
Neither electrostatic fields nor electro-dynamic fields
Both electrostatic fields and electro-dynamic fields
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Identification of highest priority interrupt can be achieved in a minimum time by which of the following schemes?
Hardwired polling
Priority encode circuit
Software polling
Subdivision of interrupt register into a number of sub registers which are checked parallely
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
A super heterodyne receiver has an input circuit tuned to a 570 KHz signal. If the intermediate frequency of the amplifier is tuned to 455 KHz. The quality factor Q for a Image Rejection ratio of 125?
100
56.81
42.74
87
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
The antenna most commonly used for TV broadcasting in the UHF band is
turnstile antenna
dipole antenna
yagi antenna
rhombic antenna
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Which of the following is a microwave power amplifier?
Gunn diode
Reflex klystron
Magnetron
Travelling wave tube
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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