POWER SYSTEMS QUIZ

Deaerative heating is done to

remove dissolved gases in water.

remove dissolved.

heat the steam.

heat the feed water.

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is/are base load plants?

hydro plants

thermal plants

nuclear plants

All of these

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The total number of strands in a ACSR conductor are 7, then find the layer number?

7

2

3

5

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Mercury is choice with steam in binary vapor cycle because

higher critical temperature and pressure.

all of above.

relative low vaporization pressure.

higher saturation temperature than other fluids.

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Surge impedance loading can be increased by

both 1 and 2

increasing of voltage level

increasing of capacitance value

increasing of inductance value

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Which one of following is employed as a moderator by CANDU type of slow thermal nuclear reactors

Graphite.

Beryllium.

Water.

Heavy water.

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In a power system with negligible resistance, the fault current at a point is 8.00 pu. The series reactance is to be included at the fault point to limit the short circuit. current to 5.00 pu is

0.125 pu.

0.200 pu.

3.000 pu.

0.075 pu.

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A 20 MVA generator has inertia constant of 0.5 pu. Find new value for 50 MVA base?

0.2 pu

0.4 pu

0.1 pu

0.5 pu

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Telecommunication lines are transposed to reduce the

voltage level

efficiency

radio interference in communication lines

All of these

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A 100 Km long transmission line is loaded at 110 kV. If the loss of line is 5 MW and the load is 150 VA the resistance of the line is

6.06 ÃŽÂ© / phase.

2.26 ÃŽÂ© / phase.

4.65 ÃŽÂ© / phase.

8.06 ÃŽÂ© / phase.

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YOUR ANSWER : ?

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