GATE 2020: Revision Quiz 1 for ESE & GATE EE Exams

Question 1

In the given circuit, the parameter k is positive and the power dissipated in the 2 Ω resistor is 12.5 W. The value of k is ________

Question 2

The total power dissipated in the circuit, shows in the figure, is 1kW.

The voltmeter, across the load, reads 200 V. The value of X_L is _________.

Question 3

For the RLC parallel resonant circuit when R = 8K Ω L = 80 mH and C = 0.50 μF; the quality factor is?

Question 4

In the circuit shown, the PNP transistor has

and

Assume that

For

to be 5 V, the value of

is ___________ .

Question 5

In the following circuit, what is the impedance R_b seen through base of the transistor?

Question 6

The switch SW shown in the circuit is kept at position ‘1’ for a long duration. At

the switch is moved to position ‘2’ Assuming

the voltage

across capacitor is

Question 7

The Z-parameters of a two-port network are:

When converted in terms of the T-parameters, the parameters were obtained as,

Determine the value of variables in Z-parameter matrix.

Question 8

For the network of figure determine the input impedance Z_i (in kΩ )Assume V_cc=22V

R_S = 10 kΩ, R₁ = 56 kΩ, R₂ = 8.2 kΩ
C_E = 20 μF, R_E = 1.5 kΩ
R_C = 6.8 kΩ, C_C = 10 μF

Question 9

Two AC sources feed a common variable resistive load as shown in figure below

The maximum power that can be transferred to a variable load R_L is _______ W.

Question 10

For the circuit shown in figure below. Find the collector voltage ‘V_C’. [Assume the β of the transistor to be infinitely high and V_BE = 0.7 volts]

Question 11

The R-L-C series circuit shown is supplied from a variable frequency voltage source. The admittance-locus of the R-L-C network at terminals AB for increasing frequency

is

Question 12

Assuming both the voltage sources are in phase, the value of R for which maximum power is transferred from circuit A to circuit B is

Question 13

From the circuit given below, find the operating region of the transistors T1 and T2
(V_TH=-0.4)

Question 14

Each diode is described by a linearized volt-ampere characteristic, with incremental resistance ‘r’ and offset voltage ‘V_β’. Diode D₁ is germanium with V_β=0 .2 V and r= 20Ω whereas Diode D₂ is silicon with V_β=0 .6 V and r= 15 Ω. Find the diode current if R=10 KΩ

Question 15

The Y-parameters of two two-port networks

and

are obtained as:

Determine the Y-parameters of the two port network formed by the series connection of the networks

and

.