PPD ORAL QUIZ

Which of the following is a non-renewable source of energy?

• solar

• wind

• nuclear

• hydro

Which one is essential for combustion of fuel?

• Oxygen to support combustion

• Correct Fuel-Air ratio

• Proper ignition temperature

• All of the above

Reheat cycle in steam power plant is used to

• Utilize heat of flue gases

• Increase thermal efficiency

• Improve condenser performance

• Reduce loss of heat

Steam turbine is commonly used in steam power station are

• Condensing type

• Non-condensing type

• Reaction type

• None of the above

Function of air pump in condenser is

• Remove water

• Retain vacuum

• Retain atmospheric pressure

• None of these

What is the reason why thermal power plants decrease capacity during summer?

• Decrease the water level at the lake

• Temperature rise of the lake

• Taking a bath or swimming in the lake

• There is no rain

An effective remover of dusts, carbon particles, and others from the flue gas of power plants

• Electrostatic precipitator

• Soot blower and collector

• Mechanical collector

• Dust scrubber

The efficiency of the thermal power plant improves with

• Increase quantity of coal burnt

• Use of high steam pressures

• Lower load of the plant

• Larger quantity of water used

Which of the following is the least efficient power plant?

• Diesel

• Gasoline

• Coal-fired

• Combined cycle

Geothermal power plant is most suitable for

• Standby

• Peak load

• Regulating

• Base load