Electronics and Communication Engineering - Electronic Devices and Circuits
Exercise :: Electronic Devices and Circuits - Section 15
6. |
Figure represents a
 |
A. |
Diode rectifier | B. |
Schottky diode | C. |
Varistor | D. |
None of the above |
Answer: Option B
Explanation:
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7. |
The output, V-I characteristics of an Enhancement type MOSFET has |
A. |
only an ohmic region | B. |
only a saturation region | C. |
an ohmic region at low voltage value followed by a saturation region at higher voltages | D. |
an ohmic region at large voltage values preceded by a saturation region at lower voltages |
Answer: Option C
Explanation:
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8. |
Piezoelectric quartz crystal resonators find application where |
A. |
signal amplification is required | B. |
rectification of the signal is required | C. |
signal frequency control is required | D. |
modulation of signal is required |
Answer: Option B
Explanation:
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9. |
The forbidden energy gap between the valence band and conduction band will be least in case of |
A. |
metals | B. |
semiconductors | C. |
insulators | D. |
all of the above |
Answer: Option A
Explanation:
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10. |
If too large current passes through the diode |
A. |
all electrons will leave | B. |
all holes will freeze | C. |
excessive heat may damage the diode | D. |
diode will emit light |
Answer: Option C
Explanation:
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