Electronics and Communication Engineering - Analog Electronics
Exercise : Analog Electronics - Section 3
- Analog Electronics - Section 11
- Analog Electronics - Section 21
- Analog Electronics - Section 20
- Analog Electronics - Section 19
- Analog Electronics - Section 18
- Analog Electronics - Section 17
- Analog Electronics - Section 16
- Analog Electronics - Section 15
- Analog Electronics - Section 14
- Analog Electronics - Section 13
- Analog Electronics - Section 12
- Analog Electronics - Section 1
- Analog Electronics - Section 10
- Analog Electronics - Section 9
- Analog Electronics - Section 8
- Analog Electronics - Section 7
- Analog Electronics - Section 6
- Analog Electronics - Section 5
- Analog Electronics - Section 4
- Analog Electronics - Section 3
- Analog Electronics - Section 2
1.
A full wave rectifier circuit using centre tapped transformer and a bridge rectifier are fed at 100 V, 50 Hz. The frequencies of outputs in these two rectifiers are
Answer: Option
Explanation:
Output wave in each case has two cycles for one cycle of input wave.
2.
When the ac base voltage in a CE amplifier circuit is too high, the ac emitter current is
Answer: Option
Explanation:
A high signal causes distortion because v-i characteristics of BJT is non-linear.
3.
When load is coupled to class A amplifier through transformer, efficiency decreases.
Answer: Option
Explanation:
Transformer coupling increases efficiency.
4.
The gain of an FET amplifier can be changed by changing
Answer: Option
Explanation:
Gain is proportional to gm .
5.
The open loop gain of an actual op-amp is about 100.
Answer: Option
Explanation:
It is very high.
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