BARC EE : Full Syllabus Test - 20 for ESE & GATE EE Exams

Question 1

A DC ammeter has a resistance of 0.5 Ω and current range is 0 – 150 A. If the range is to be extended to 0 – 900 A, then meter requires a shunt resistance of

Question 2

Transistor can be used as

Question 3

Find the average load voltage of the rectifier circuit, if the device is switched to ON at

angular angle.

Question 4

Consider the following statements regarding PMMC instruments

1. Power consumption is less

2. Torque-weight ratio is low

3. The scale is uniformly divided

4. Measure AC as well as DC quantities

Which of the above statements are correct?

Question 5

The mutual inductance M varies with deflection θ (expressed in degrees) as

M = - 10 cos (θ + 60°) mH

If a direct current of 25 mA produces a deflection of 30° then the deflection torque will be

Question 6

How the voltage 0.5314 will be displayed on a

digital voltmeter measuring maximum of 1 V.

Question 7

In a dc machine, for the same number of slots and same current in the armature conductor, which one of the following will induce higher emf?

Question 8

Two metallic sphere A & B radii ‘a’ & ‘b’ respectively are charged and joined by a wire, the ratio of electric field of the sphere ‘A’ to sphere ‘B’ is ________.

Question 9

A 4-pole, 50 Hz, 3-phase induction motor with a rotor resistance of 0.25Ω develops a maximum torque of 25 N.m at 1400 rpm. The rotor reactance x₂ and slip at maximum torque s_max,T respectively would be

Question 10

A single phase full bridge converter supplies a load drawing constant and ripple free load current. If the triggering angle is 60^o, the input power factor will be:

Question 11

At what point of temperature, iron (ferromagnetic material) changes its state to paramagnetic ?

Question 12

The output voltage waveform of a rectifier is shown in following figure. The average output voltage is.

Question 13

With K as a constant, the possible solution for the first order differential equation

is

Question 14

The circuit employing Class C commutation has V_s = 100 V, R₁= 50 Ω and R₂= 100 Ω. The peak value of current through thyristor T₂ is

Question 15

Consider the Z_BUS matrix of a 3- bus system

. If a three-phase symmetrical fault occurs on bus 2, the voltage at bus 3 during fault. (consider no-load Prefault condition, i.e., V₂ = 1∠0° p.u.)