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BARC EE : Full Syllabus Test - 16

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Question 1

The partial differential equation

Question 2

The SCR triggering method in which the junction temperature can be maintained at low value is?

Question 3

Power factor of a load 300 kW improves from 0.6 lag to 0.8 lag, simultaneously the motor carries a load of 100kW. The power factor motor is:

Question 4

For DC machine if flux per pole is 0.03612 Wb, total conductors are 432, speed in rpm 900 and consists of 6 poles induced emf for wave connection is ______Volts.

Question 5

For 415 V, 50 Hz, 6 pole, 3-ϕ induction motor running at 950 rpm, if:

(i) Power input = 10 kW

(ii) Stator loss = 1 kW

(iii) Friction and windage loss = 550 W

The efficiency of the motor is:

Question 6

A DC Generator whose external characteristic is given by equation, Vt = 20 – 0.5IL, where IL represents the load current. If the connected load takes 200 W, then the resistance of the load will be-

Question 7

For an S.C.R, the gate cathode characteristic has a straight line slope of 140. For Trigger source voltage of 20V. And allowable Gate power dissipation of 0.5 watts, what is the gate source Resistance?

Question 8

For a network graph having 20 nodes and 38 branches, size of cut-set matrix is (a × b). Then the value of (a + b) is __________.

Question 9

What is the frequency of oscillation of the circuit shown is

Question 10

In a thyristor dc chopper, which type of commutation results in best performance?

Question 11

Consider the following:
1) L.P.F. method
2) E.M.F. method
3) Z.P.F. method
4) M.M.F. method
Which one of the above methods is not applicable to determine the voltage regulation of an alternator?

Question 12

The open loop transfer function of a unity feedback system is given by . The resonant peak is

Question 13

How many junctions and terminals does a silicon controlled rectifier has?

Question 14

A 2 pole 50 Hz 100 MVA turbo generator has moment of inertia 6× 103 kg – m2. The kinetic Energy at rated speed will be –

Question 15

The controlling torque in gravity-controlled meter is proportional to
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Sep 13ESE & GATE EE