Test: Analog Electronics - 2
20 Questions MCQ Test GATE ECE (Electronics) 2023 Mock Test Series | Test: Analog Electronics - 2
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Shown below is a timer 555 IC circuit
Frequency of the waveform generated by the above circuit is
It is just by figure only. But one can also calculate transfer function.
Consider the following feedback pair connection.
Collector current IC is ____________ mA.
If for a given programmable OPAMP, G1 is the gain, when only S1 is closed and G2 is the gain when only S2 is closed, then relation between G1 & G2 is?
When S1 is closed G1 = 1 it behaves like a voltage follower circuit. When S2 s closed
For given RC − Phase shift oscillator, by use of BJT if R1 = R2 = 10k, Rc = 2K, R = 2K, C = 0.01 µF
Q.
What is Minimum value of hfe for possible oscillation?
For given RC − Phase shift oscillator, by use of BJT if R1 = R2 = 10k, Rc = 2K, R = 2K, C = 0.01 µF
Q.
What is frequency of oscillation for circuit?
For a given CE, amplifier if β = 100, IC = 1 mA, RS = 1 KΩ, Rc = 5 KΩ, Re = 200 Ω, hie = 2.5 K.
Q.
Calculate value of voltage gain
For a given CE, amplifier if β = 100, IC = 1 mA, RS = 1 KΩ, Rc = 5 KΩ, Re = 200 Ω, hie = 2.5 K.
Q.
Calculate input impedance seen by source
For the given FET, circuit if
RD = 20 kΩ rd = 50 kΩ
RS = 2 kΩ µ = 50
Q.
Calculate value of v0/vs
For the given FET, circuit if
RD = 20 kΩ rd = 50 kΩ
RS = 2 kΩ µ = 50
Q.
Calculate value of output impedance
A MOSFET amplifier circuit is as shown below:
If device parameter K = 15 µA/V2, then value of Transconductance of MOSFET is _________ ms.
The 3-terminal linear voltage regulator is connected to a 10 ohm load resistor as shown in figure. If Vin is 10 volt, what is power dissipated in the Si transistor.
A sinusoidal oscillator is built using an amplifier of real gain A, infinite input impedance and feedback (β) network is shown in figure. If Z = jX, then what is the value of z0.
Z+Z+Z0 =0 ⇒ Z0 = - 2jX
Shown below is a network, in collector feedback mode.
Q.
The voltage gain Av is ……………., Assume re = 
Shown below is a network, in collector feedback mode.
Q.
The current gain Ai is ≈
A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.
Numerical Anser type question
Q.
For a BJT, CE-mode, Base to emitter capacitance (Cπ) is 10 times the collector to base capacitance (Cµ). If transistor is biased at quiescent collector current ICQ = 1 mA, and its short circuit unity gain frequency is 0.909 M rad/sec, then the value of Cπ is _______ nF.
Voltage reference diode means zener diode
What should be values of components R & R2 such that frequency of wein-bridge oscillator is 300 HZ, if C = 0.01 µF, R1 = 12 kΩ.
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