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DMRC 2018 Electrical Engineering : Quiz 14

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Question 1

In the following circuit, the power P is consumed by the load in the absence of SCR. Then by what factor the power will reduce if the load is fed power in the presence of SCR at α=90⁰.

Question 2

A 100 MVA, 50 Hz generator feeding power through a double circuit transmission line with initial rotor angle 60 °. A 3 phase fault occurs at middle point of one of the lines. the internal voltage of the generator is 1.5 pu and equivalent transfer admittance during fault is 0.5 pu and the infinite bus voltage is 1.1 pu. The generator has an inertia constant of 4 MJ/MVA and it was delivering 1 pu power prior of the fault. The electrical power delivered (in p.u) by the generator during fault condition is –

Question 3

A 100 kVA, 2 winding transformer has an iron loss of 1 kW and a copper loss of 1.5 kW at normal output current. Calculate maximum efficiency in Percentage (%) at 0.8 lagging power factor

Question 4

For the same a.c. power output as above, what should be the minimum power rating of circuit for class

operation?

Question 5

An AC supply of 230 V is applied to half- wave rectifier through transformer of turns ratio 10 : 1 as shown in figure. Determine the peak inverse voltage across the diode.

Question 6

A 5 A source has a shunt internal resistance of

. The maximum power that can be delivered to a load is

Question 7

The voltage of a circuit is measured by a voltmeter having input impedance comparable with the output impedance of the circuit thereby causing error in voltage measurement. This error may be called as_________.

Question 8

In which of the following do the measurements find their application?
I. Automatic control of processes and operations
II. Engineering experimental analysis
III. Monitoring of processes and operations

Question 9

The steady state error of a unity feedback system for step input is 0.2. the steady state error of the same system, for an input

Question 10

A jump instruction followed by a ret instruction in the subroutine _____________.

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ESE & GATE EE General

Nov 10ESE & GATE EE