Analog Circuits [GATE (Graduate Aptitude Test in Engineering) Electronics & CE (EC)]: Questions 220 - 223 of 300
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Question 220
Appeared in Year: 2015
Question Numeric Answer▾
In the circuit shown in the figure, the BJT has a current gain of . For an emitter base voltage the emitter collector voltage is …
EditQuestion 221
Appeared in Year: 2015
Question MCQ▾
An LC tank circuit consists of an ideal capacitor C connected in parallel with a coil of inductance L having an internal resistance R. The resonant frequency of the tank circuit is
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 222
Appeared in Year: 2016
Question Numeric Answer▾
In the astable multivibrator circuit shown in the figure, the frequency of oscillation at the output is …
EditQuestion 223
Appeared in Year: 2017
Question MCQ▾
An bipolar junction transistor (BJT) is operating in the active region. If the reverse bias across the base-collector junction is increased. Then
Choices
Choice (4) | Response | |
---|---|---|
a. | The effective base width increases and common-emitter current gain increases. | |
b. | The effective base width increases and common emitter current gain decreases. | |
c. | The effective base width decreases and common-emitter current gain increases. | |
d. | The effective base width decreases and common-emitter current gain decreases. |