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Power Plant Engineering MCQ Question with Answer

Power Plant Engineering MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 43
In nuclear fission

The original elements change into completely different elements
The electrons of the element change
The molecules rearrange themselves to form other molecules
None of the above
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Question No : 44
Which of the following can be used as a coolant in nuclear plant?

Light or heavy water
Molten lead
Carbon dioxide
Freon
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Question No : 45
A fission chain reaction in uranium can be developed by

Slowing down fast neutrons so that Uz fission continues by slow motion neutrons
Accelerating fast neutrons
Absorbing all neutrons
Using moderator
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Question No : 46
Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has

High neutron absorption cross-section
Low moderating efficiency
High neutron scatter cross-section
Low neutron absorption cross-section
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Question No : 47
The following present serious difficulty in designing reactor shield

Alpha particles
Beta particles
Thermal neutrons
Fast neutrons and gamma rays
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Question No : 48
The risk of radioactive hazard is greatest in the turbine with following reactor

Pressurised water
Boiling water
Gas cooled
Liquid metal cooled
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Question No : 49
The mass number of a substance represents the sum of total number of

Protons and neutrons in an atom
Protons and electrons in an atom
Neutrons and electrons in an atom
Protons and neutrons in a nucleus
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