POWER SYSTEMS QUIZ

Surge impedance loading can be increased by

increasing of capacitance value

increasing of voltage level

increasing of inductance value

both 1 and 2

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Which of the following rotor is used in thermal power plants?

squirrel cage rotor

salient pole rotor

cylindrical rotor

either of these

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Normally Z bus matrix is a

unit matrix

sparse matrix

full matrix

null matrix

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What are the methods of laying underground cables?

Draw - in - system / duct - pipe laying.

Direct laying.

Both A and B.

None of these.

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If the conductor diameter decreases, inductance of the line,

decreases

None of these

remains unaffected

increases

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With reference to hydrometer station, the graphical representation of the discharge as function of time is known as

Hydro-graph.

Monograph.

Hectograph.

Load duration curve.

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For harnessing low variable water heads, the suitable hydraulic turbine with reaction and adjustable vanes runners is

Francis

Kaplan

Pelton

Impeller

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Which of the following power stations is mainly used to cover peak load on the system?

gas based thermal power plant

nuclear plant

pumped storage hydro power plant

coal based thermal power plant

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For harnessing low variable water heads, the suitable hydraulic turbine with high percentage of reaction and runner adjust vanes is

Francis.

Kaplan.

Impeller.

Pelton.

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The fact that current density is higher at the surface when compared to centre is known as

skin effect

proximity effect

carona

All of these

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