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Electronic Devices And Circuits
Exercise: Electronic Devices And Circuits
📂 Electronic Devices And Circuits
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Questions for: Electronic Devices And Circuits
In commercial electron tubes the current produced by the cathode at 1000 K is about
A:
0.01 A per cm
2
of cathode surface
B:
0.1 A per cm
2
of cathode surface
C:
1 A per cm
2
of cathode surface
D:
5 A per cm
2
of cathode surface
Answer:
B
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Post
Surface leakage current is a part of
A:
reverse current
B:
forward current
C:
reverse breakdown
D:
forward breakdown
Answer:
A
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Post
The holes diffuse from P-region to the N-region in a P-N junction diode because
A:
there is greater concentration of holes in the P-region as compared to N-region
B:
there is greater concentration of holes in the N-region as compared to P-region
C:
the free electrons in the N-region attract them
D:
potential difference facilities such transfer
Answer:
A
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Post
Avalanche beakdown is primarily dependent on the phenomenon of
A:
doping
B:
collision
C:
recombination
D:
ionization
Answer:
B
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The dc output voltage from a power supply
A:
increases with higher values of filter capacitance and decreases with more load current
B:
decreases with higher values of filter capacitance and increases with more load current
C:
decreases with higher values of filter capacitance as well as with more load current
D:
increases with higher values of filter capacitance as well as with more load current
Answer:
A
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