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LMRC JE 2018 EE: Practice Quiz 20

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Question 1

A voltage source having an internal impedance of Description: 13_Phasor-Algebra_files\image242.pngsupplies power to a resistive load. What should be the load resistance for maximum power transferred to it?

Question 2

If the power and current gains of a transistor amplifier are 16500 and 100 respectively, then voltage gain is…………

Question 3

In the circuit shown in Figure.

What is the voltage across R2 with voltmeter connected in the circuit?

Question 4

The distribution system shown in figure given below is to be protected by overm current system of protection

At which location are directional over current relays required for proper fault discrimination?

Question 5

A voltage source has an internal impedance consisting of Description: 13_Phasor-Algebra_files\image248.pngin series with Description: 13_Phasor-Algebra_files\image249.pngWhat should be the reactive component Description: 13_Phasor-Algebra_files\image250.pngof load for maximum output at a frequency of 500 kHz?

Question 6

A synchronous motor is operating with normal excitation. With the increase in load, the armature current drawn from the supply mains increases due to

Question 7

Fig. shows a permanent magnet moving coil (PMMC) voltmeter having range of 100 V. The coil resistance is and full-scale deflection current is
What is the voltmeter sensitivity if the range is 50 V?

Question 8

If the output of an amplifier is 10 V and 100 mV from the output is fed back to the input, then feedback fraction is……………

Question 9

Which of the following circuit breakers has the lowest voltage range?

Question 10

In the circuit shown in Fig., what is the resonant frequency in rad/s?
Description: E:\Gate\SSC JE Electrical New Files-Done\14_Parallel-AC-Circuits_files\image199.png
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Apr 29ESE & GATE EE