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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 4
16.
Dielectric strength of polythene is around
10 kV/mm
40 kV/mm
100 kV/mm
140 kV/mm
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Resistivity of hard drawn copper is
less than that of annealed copper
more than that of annealed copper
same as that of annealed copper
decreasing when temperature increases
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
The channel of JFET consists of
p type material only
n type material only
conducting material
either p or n type material
Answer: Option
Explanation:

The channel in JFET may be n type or p type. If channel is n type, gate is p type and if channel is p type gate is n type.

19.
In a bipolar junction transistor adc = 0.98, ICO= 2 μA and 1B = 15 μA. The collector current IC is
635 mA
735 mA
835 mA
935 mA
Answer: Option
Explanation:

20.
The voltage across the secondary of the transformer in a half wave rectifier with a shunt capacitor filter is 50 volts. The maximum voltage that will occur on the reverse biased diode will be
100 V
88 V
50 V
25 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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