BARC EE : Subject Revision Quiz 3 for ESE & GATE EE Exams

Question 1

If the transform of

is

, then transform of

will be:-

Question 2

The total current I = I₁ + I₂ in a circuit is measured as I₁ = (150 ± 1) A, I₂ = (150 ± 2) A, where the limits of error are given as standard deviation, I is measured as.

Question 3

What is the Laplace Transform of t²e^–2t u(t) ?

Question 4

A 3Φ, 400 volts, balanced star connected lagging load takes a current of 5 amp and the power is measured by two wattmeters. If the value of second watt meter reading is 1000 watt, the power factor of load will be.

Question 5

For half wave symmetry, the necessary condition is:-

Question 6

A metal strain gauge factor of 2. Its nominal resistance is 120 Ω. If it undergoes a strain of 10.⁵, the value of change of resistance in response to the strain is

Question 7

The waveform of the signal

Question 8

Series resistance required to read 0-250 V with a moving coil instrument of internal resistance 2 ohm and full-scale deflection of 50 mA is?

Question 9

The discrete-time signal x(n) = (-1)ⁿ is periodic with fundamental period

Question 10

A 0-10 a ammeter has a guaranteed accuracy of 1% of full scale deflection, the limiting error while reading 2.5 A will be

Question 11

Modified z-transform is used

Question 12

A (0 A to 50 A) moving coil ammeter has a voltage drop of 0.1 V across its terminals at full scale deflection. The external shunt resistance (in milliohms) needed to extend its range to 0 A to 500 A is

Question 13

What is the convolution of the sequences of x₁(n) = x₂(n) = {1, 1, 1}?

Question 14

A 230 V, 1-phase watt hour meter records a constant load of 10 A for 10 hours at unity p.f. If the meter disc makes 2300 revolutions during this period, what is the meter constant in revolutions/kWh?

Question 15

In IIR filter design by Bilinear transformation, the Bilinear transformation is a mapping from,

Question 16

For a bandwidth of 100 MHz, oscilloscope should have a rise time of:

Question 17

A discrete-time signal x[n] is represented as under:

Which of the following sketches represents x[–n + 2]?

Question 18

A Murray loop test is conducted on a 400-m-long faulty cable. At balance, the resistance connected to the faulty core was set to 40 Ω and the resistance of the resistor connected to the sound core was 60 Ω. What is the distance of the fault from the test end?

Question 19

A signal x(t) with respect to time is sketched as under:

The signal x(t) could be classified as:

Question 20

A wattmeter having a range of 4000 W has an error of ±2% of full-scale deflection. If the true power is 2000 W, what would be the range of the reading?