GATE EC 2021: Subject Revision Quiz 2 (App update required to attempt this test)
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The circuit shown is a MOS cascade amplifier. Calculate the input resistance of transistor Q2?
For the DC analysis of the common base amplifier shown, consider under these conditions, the value of mid band voltage gain is ______
Consider the class emitter follower circuit as shown in figure. All transistors are matched with parameters (VBE)ON = 0.7V , (VCE)Sat = 0.2V and VA = ∞. Neglecting base current |Vomax| + |Vomin| is equal to ____ V
[Q2 & Q3 should always be in linear mode].
Match list 1(Type of amplifier) with list II (Property) and select the correct answer using the code given below the lists:
List - I
A) Single ended class A
B) Class AB push pull
C) Class B push pull
D) Class C
List - II
1) Medium efficiency with minimum distortion
2) High efficiency with crossover distortion
3) Harmonic generator with highest possible conversion efficiency
4) Poor conversion efficiency with minimum distortion
Find the frequency of oscillation of a Colpitts oscillator with C1 = 0.004 μF, C2 = 0.03 μF, and L = 4.0 mH.
In the circuit shown in figure, the output voltage V o is _______ V
Consider the waveform shown below:
If the input is a 100V peak square wave with a period of 20 ms. The output is so designed that it has a maximum value of 25 and minimum of –175V at the steady state, then the circuit which can perform this function can be represented as
Given astable multivibrator generate square wave of 10 kHz with 60% duty cycle. It uses a capacitor of 500 pF. Find the value of R1 & R2.
Consider the Schmitt trigger circuit shown below the Hysteresis width in Volts is……?
The NMOS and PMOS transistor are matched with = 1V, Assume λ = 0 for both devices.
Calculate the output voltage Vo (in Volt) for Vin = 2.5 V
A sinusoidal signal VS = 1.95 sin 400t is applied to a power amplifier. The resulting current is Io = 12 sin 400t + 1.2 sin 800t + 0.9 sin 1200t + 0.4 sin 1600t. Find the increase in power because of distortion.
For the transistor shown below β = 150.
If IQ = 2mA, the value of Vo (in V)is
In the given figure, cut in voltage of both zener diode Dz and D is 0.7V, while breakdown voltage of zener is 3.3V and reverse break down of D is 50V. The other parameters can be assumed to be the same as those of an ideal diode. The values of the peak output voltage (V0) are (given ω= 314 rad/sec)
Consider the circuit shown below
The type of amplifier and feedback factor of the amplifier
A depletion NMOS transistor circuit has following parameters
Vth = – 2V, kn = 5m A/v2 , λ = 0.01v–1 Find the voltage gain, Av