Top 550+ Solved Energy Conversion MCQ Questions Answer

From 466 to 480 of 591

Q. Heat rate : Efficiency

a. Coal : Oil

b. Momentum : Variable cost

c. Fixed cost : Variable cost

d. Resistance : Conductance

e. None of the above

  • d. Resistance : Conductance

Q. Sweet gas is free of

a. crabon dioxide

b. carbon monoxide

c. nitrogen

d. hydrogen sulphide

e. None of the above

  • d. hydrogen sulphide

Q. Maximum horse power of a steam locomotive is

a. 2500

b. 5000

c. 500

d. 1500

e. 100

  • d. 1500

Q. Pressure cables are used for

a. Low power factors

b. High current ratings

c. High KVA

d. High kW

e. Higher voltages

  • e. Higher voltages

Q. HRC fuses provide best protection against

a. Short circuits

b. Ligntning

c. Sparking

d. Fire

e. All of the above

  • a. Short circuits

Q. The fact that a conductor carries more current on the surface as compared to core is known as

a. skin effect

b. corona

c. permeability

d. unsymmetrical fault

e. None of the above

  • a. skin effect

Q. Diesel engine fuels are rated by

a. HUCR

b. Cetane number

c. Octane number

d. Calorific value

e. CFR number

  • b. Cetane number

Q. Which of the following area is preferred for solar thermal electric power plants?

a. Mountain tops

b. Hot arid zones

c. Coastal areas

d. High rainfall zones

e. None of the above

  • b. Hot arid zones

Q. The wavelength of green colour is nearly

a. 4000 A

b. 5500 A

c. 2500 A

d. 1000 A

e. 7500 A

  • b. 5500 A

Q. A module is a

a. newly installed solar cell

b. series - parallel arrangement of solar cells

c. a series of solar cells when not used for power generation

d. None of the above

e. None of the above

  • b. series - parallel arrangement of solar cells

Q. Lighite is

a. pure carbon

b. high calorific value coal

c. low calorific value coal

d. a vergetable origin liquid fuel

e. None of the above

  • c. low calorific value coal

Q. The disadvantage of transmission lines as compared to cables is

a. exposure to lightning

b. exposure to atmospheric hazards likes smoke, ice, etc.

c. inductive interference between power and communication circuits

d. All of the above

e. None of the above

  • d. All of the above

Q. During storm the live conductor of public electric supply breaks of down and touches the earth. The consequence will be

a. supply voltage will drop

b. supply voltage will increase

c. current will flow to earth

d. no current will flow in the conductor

e. None of the above

  • c. current will flow to earth

Q. Photovoltaic solar energy conversion system makes use of

a. fuel cells

b. solar cells

c. solar ponds

d. None of the above

e. None of the above

  • b. solar cells

Q. A photovoltaic cell converts

a. heat energy into mechanical energy

b. chemical energy into electrical energy

c. solar energy into electrical energy

d. electrical energy into chemical energy

e. None of the above

  • c. solar energy into electrical energy
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