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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 6
16.
High purity copper is obtained by
rolling casting
casting
electrolytic refining
induction heating
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Photo electric emission can occur only if the frequency of light is more than threshold frequency.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
In a JFET the width of channel is controlled by
gate voltage
drain current
source current
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
The unit of thermal resistance of a semi-conductor device is
Ohms
Ohms/°C
°C/ohm
°C/watt
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Figure represents a
Varactor
LED
Zener diode
Temperature dependent diode
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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