Exercise: Electronic Devices And Circuits

Questions for: Electronic Devices And Circuits

What happens when forward bias is applied to a junction diode?
A:
Majority carrier current is reduced to zero
B:
Minority carrier current is reduced to zero
C:
Potential barrier is increased
D:
Potential barrier is decreased
Answer: D
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The intrinsic resistivity of silicon at 300 K is about
A:
1 Ω-cm
B:
400 Ω-cm
C:
10000 Ω-cm
D:
230000 Ω-cm
Answer: D
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In which of the following does a negative resistance region exist in the v-i characteristics?
A:
PIN diode
B:
Schottky diode
C:
Tunnel diode
D:
Zener diode
Answer: C
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If an electron move through a potential difference of 500 V, the energy possesses by it will be
A:
500 ergs
B:
500 joules
C:
500 eV
D:
500 mV
Answer: C
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The light output of LED varies as (current)n. The value of n is about
A:
0.5
B:
1
C:
1.3
D:
2.1
Answer: C
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