Electronics and Communication Engineering - Electronic Devices and Circuits

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.