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DMRC 2018 Electrical Engineering : Quiz 10

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Question 1

If a single phase inverter operated using PWM gives square output of magnitude 1V of width 100⁰ in each half cycle. Then, determine the rms value of fundamental component.

Question 2

The time take by a surge to travel to the end of 1200 km long overhead transmission line is –

Question 3

A synchronous generator is running over excited with E_f = 1.2 pu is delivering power of 0.9 pu to the bus. Generator has synchronous reactance of 0.6 pu. Calculate the change in reactive power if prime mover torque is reduced by 1% -

Question 4

Suppose Fig. has the following modifications. The signal source has a resistance of 2000

and the load is 25

The stage 1 has input resistance of 1

and stage 3 has output resistance of 50

. The input power to the first stage is

Question 5

In an electron gun, the accelerating potential is V volts. If e is the charge and m is the mass of an electron, the maximum velocity attained by the electron is

Question 6

The current through a branch in a linear circuit is 2A when the input source voltage is 10V. If the voltage is reduced to 1V and the polarity is reversed, the current through the branch is

Question 7

A wattmeter is marked 15 A/30 A, 300 V/600 V and its scale is marked up to 4500 watts. When the meter is connected for 30 A, 600 V, the point indicated 2000 watts. Actual power in the circuit is

Question 8

Which of the following quantities under mechanical rotational system and electrical system are not analogous?

Question 9

Block diagram of a unity feedback control system is given by

where, G1(s)=

and G2(s)=

.What will be the successive elements in the first column of Routh’s array?

Question 10

what are basic gates required to implement a full adder

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ESE & GATE EE General

Feb 8ESE & GATE EE