Basics Of Electronics: Quiz!
(162).jpg "Basics Of Electronics: Quiz!")
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- 1.
![The gate-source voltage at which the ________________ layer in a MOSFET is formed is called the ________________ voltage. - ProProfs]( "The gate-source voltage at which the ________________ layer in a MOSFET is formed is called the ________________ voltage.")
The gate-source voltage at which the ________________ layer in a MOSFET is formed is called the ________________ voltage.- A.
Inversion,threshold
- B.
Depletion,threshold
- C.
Inversion,bias
- D.
Depletion,bias
- 2.Transition Frequency of an MOSFET , fH is
- A.
1/2π *gm /(Cπ + Cµ)
- B.
1/2π* gm /(Cgs+Cgd)
- C.
1/2π* gm /(Cπ+Cgd)
- D.
1/2π *gm /(Cgs + Cµ)
- 3.In a low-pass filter consisting of a resistor and a capacitor, how will the cut-off frequency change if the capacitance is increased?
- A.
Cut-off frequency does not change
- B.
Cut-off frequency increases
- C.
Cut-off frequency decreases
- D.
Cut-off frequency doesn’t depend on capacitance value
- 4.Which is a primary disadvantage of a solid-state amplifier compared with a vacuum-tube amplifier?
- A.
Poor tolerance for low-current and -voltage transients
- B.
Poor tolerance for high -current and -voltage transients.
- C.
Both a) & b)
- D.
None of the above
- 5.A transistor has a current gain of 0.5 in the CB mode. Its current gain in the CC mode is:
- A.
2
- B.
1
- C.
50
- D.
20
- 6.An LED has a rating of 4V and 100 mA. It is used along with a 12V battery. The range of series resistance is:
- A.
0 to 200
- B.
200 to 500
- C.
Less than 200
- D.
None of the above
- 7.What is the standard sound pressure for defining Signal to Noise ratio of microphones?
- A.
0.1 Pa
- B.
0.01 Pa
- C.
0.2 Pa
- D.
0.5 Pa
- 8.Zener diode can be used as _____
- A.
AC voltage regulator only
- B.
DC voltage regulator only
- C.
Both AC and DC regulator
- D.
None of the above
- 9.A galvanometer in series with a high resistance is called?
- A.
Ammeter
- B.
Voltmeter
- C.
Wattmeter
- D.
None of the above
- 10.BC147 transistor indicates that it is made of:
- A.
Carbon
- B.
Silicon
- C.
Germanium
- D.
None of the above
- 11.A 1000V power supply would use ___ as a filter capacitor.
- A.
Paper capacitor
- B.
Mica capacitor
- C.
Electrolytic capacitor
- D.
Air capacitor
- 12.A telephone exchange has 10000 subscribers. If the number of calls originating at peak time is 8000 in one hour, the calling rate is
- A.
5/4
- B.
0.08
- C.
4/5
- D.
0.1
(3).jpg "The gate-source voltage at which the ________________ layer in a MOSFET is formed is called the ________________ voltage.")
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