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ESE 2019 Technical (Analog Circuits : Quiz 1)
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Question 1
In the circuit, the silicon diode D1, having a voltage drop of 0.7 V is forward bias. A Zener diode D2 has a breakdown voltage of 6.8 V. From the options given below, select the right option that shows current flowing through 450 Ω resistor.
Question 2
A common emitter transistor amplifier uses silicon transistor having a quiescent emitter current as 1 mA. Find the base biasing voltage of the transistor?
Question 3
In a MOSFET, ID = 10nA and VDS = 1V and sub threshold operation with n as 1 / k = 1.5. If CGS + CGD + CGB = 30fF, then find the value of fT.
Question 4
Which among the following collector current waveforms for transistors shows Class A Amplifier?
Question 5
A certain amplifier has voltage gain of 15 db. If the input signal voltage is 0.8V, what is the output voltage?
Question 6
For a Transistor, when it's AC equivalent is drawn
Consider the following statement:
1) DC sources are shorted
2) AC sources are shorted
3) DC sources are opened
4) AC sources are connected to DC sources
Which of the above statements are correct?
Consider the following statement:
1) DC sources are shorted
2) AC sources are shorted
3) DC sources are opened
4) AC sources are connected to DC sources
Which of the above statements are correct?
Question 7
A bipolar transistor is operating in the active region with a collector current of 1 mA. The β of the transistor is 100 and the thermal voltage (VT) is 25 mV. The transconductance (gm) and the input resistance (rπ) of the transistor in the common emitter configuration are, respectively.
Question 8
If the input (Vin) to the circuit is a sine wave, the output will be
Question 9
A single-stage amplifier has a voltage gain of 100. The load connected to the collector is 500Ω and its input impedance is 1kΩ. Two such stages are connected in cascade through an R-C coupling. The overall gain is
Question 10
A CE amplifier has an un-by-passed emitter resistance of 0.5 kΩ and a collector load of 5kΩ. the β of the transistor is 100 and it is operating at 1 mA. The voltage gain of the stage at mid band will be of the order of
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Feb 7ESE & GATE EC
