Exercise: Electronic Devices And Circuits

Questions for: Electronic Devices And Circuits

The product kT (where k is Boltzmann's constant and T is absolute temperature) at room temperature is about
A:
0.051 eV
B:
0.026 eV
C:
0.01 eV
D:
0.001 eV
Answer: B
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When the gate terminal of MOSFET is positive, it is said to operate in
A:
depletion mode
B:
conduction mode
C:
enhancement mode
D:
none of the above
Answer: C
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Given a power supply filter circuit, what measurements must be made of determine percentage regulation
A:
current through and voltage across the capacitor
B:
d.c. load voltage and r.m.s. load voltage
C:
current through load and voltage across load resistance
D:
number of turns and gauge of secondary winding of transformer
Answer: B
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In energy band diagram of p type semiconductor the acceptor energy level is
A:
in valence band
B:
in conduction band
C:
slightly above valence band
D:
slightly below conduction band
Answer: C
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If 10 V is the peak voltage across the secondary of the transformer in a half wave rectifier (without any filter circuit), then the maximum voltage on the reverse biased diode will be
A:
20 V
B:
14.14 V
C:
10 V
D:
7.8 V
Answer: C
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