Energy Conversion Set 17 MCQs

Q1 | Solar cells are made of

Sulphur

Silica

Antimony

Steel

Phosphorous

Q2 | A tidal power plant is being installed in India near

Goa

Gulf of Cambay

Bay of Bengal

Cochin

Vishakhapatnam

Q3 | In case the height of transmission towers is increased

the line capacitance and inductance will not change

the line capacitance will increase but line inductance will increase

the line capacitance will decrease and line inductance will increase

the line capacitance will decrease but line inductance will remain unaltered

None of the above

Q4 | Parr's classification of coal is based on

proximate analysis

ultimate analysis

orsat analysis

none of above

None of the above

Q5 | Water is fed to the boiler at

At 100 kg/cm2

At pressure more than the steam pressure

Less than atmospheric pressure

Atmospheric pressure

Slightly more than atmospheric pressure

Q6 | Which of the following location is not associated with super-thermal power plant?

Korba

Badarpur

Farakka

Rehand

None of the above

Q7 | Phase, advancers for power factor improvement are generally used for

Induction motors below 200 HP

Induction motors below 10 HP

Induction motors below 100 HP

Are lamps of high wattage

Transformers of 100 MVA and above

Q8 | The pressure of steam used in modern thermal power plants is upto

100 kg/cm2

15 kg/cm2

250 kg/cm2

350 kg/cm2

170 kg/cm2

Q9 | In transmission system a feeder feeds power to

service mains

generating stations

distributors

All of the above

None of the above

Q10 | The average pH of the normal rainfall is usually

neutral

slightly acidic

slightly alkaline

None of the above

Q11 | Sodium sulphur batteries use electrolyte consisting of

solid aluminium oxide

dilute sulphuric acid

brine

KOH

None of the above

Q12 | Corona generally results in

Violet glow

Hissing noise

Production of ozone gas

All of the above

None of the above

Q13 | Natural gas is obtained

as by-product from blast furnace

as by-product from petroleum refining

from earth's surface usually along with crude

from ammonia

None of the above

Q14 | Which of the following cannot be the prime-mover for a generator of 120 MW capacity?

Steam turbine

Gas turbine

Kaplan turbine

Diesel engine

None of the above

Q15 | Which of the following will need highest level of illumination?

Railway platforms

Foyer for cinema halls

Bed rooms

Hospital wards

Proof reading

Q16 | Quad is a mesure of

photosynthesis

wind power

radioactive decay

energy

None of the above

Q17 | A Buchholz relay is used on

Transformer

Generators

Transmission lines

Cables

All of the above

Q18 | The supply and distribution of electrical energy in states is controlled by

NTPC

Electricity Board

BHEL

Department of Industries

Department of Science and Technology

Q19 | Pyrhelicometer measures

intensity of direct solar radiation

wind speed at an elevation

fission caused by thermal reutrons

total electromagnetic radiation cmitted by the sun

None of the above

Q20 | In any transmission line, the dimensions of constants B and C are

ohm and ohm

ohm and mho

mho and ohm

mho and mho

None of the above

Q21 | By increasing sag in the suspended transmission line

Tension in the line decreases

Tension in the line increases

Current carrying capacity of conductor increases

Current carrying capacity of conductor decreases

None of the above

Q22 | As compared to copper, the conductivity of aluminium is nearly

85%

60%

40%

80%

20%

Q23 | The equipment used for pulverising is known as

Stoker

Ball mill

Burner

Coke oven

Hopper

Q24 | The dimensions of generalised constants A and D are

ohms and mhos

mhos and ohms

mhos and mhos

Both are dimensionless

ohms and ohms

Q25 | In a fuel cell positive electrode is of

oxygen

hydrogen

ammonia

carbon monoxide

None of the above