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Power Systems

Power Systems
Normally Z bus matrix is a

 unit matrix
 full matrix
 null matrix
 sparse matrix

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Power Systems
A string insulator has 4 units. The voltage across the bottom most unit is 33.33% of total voltage. Its string efficiency is

 75%
 25%
 33.33%
 66.66%

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Power Systems
Radio interference occur in telecommunication line due to

 both 1 and 2
 nether 1 nor 2
 electro static induction
 electro magnetic induction

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Power Systems
What is the function of economiser in steam boilers

 improving thermal efficiency
All of these
 cooling
 collect ash particals

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Power Systems
Which of the following power plants can generate power at unpredictable or uncontrollable time

 Wind turbine.
 Condenser.
 Pulverising unit.
 Cooling tower.

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Power Systems
Deflectors are provided in

 Francis turbine.
 Kaplan turbine.
  Pelton wheel.
 propeller turbine.

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