Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

Mechanical Engineering MCQs prepared for job test and interview preparation, especially for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover key topics such as Machine Design, Theory of Machines, Hydraulic Machines, and other important mechanical engineering concepts.

The coolant used in boiling water reactor is________________?

A Co2

B pressurised water

C mixture of water and steam

D liquid metal

Review Detailed Answer

Correct Answer: mixture of water and steam

The most practical fuel for a thermo-nuclear reactor, both from econocical and nuclear consideration is____________________?

A plutonium

B uranium

C deuterium

D thorium

Review Detailed Answer

Correct Answer: deuterium

The presence of reflector in nuclear power plants results in___________________?

A increased production of neutrons

B complete absorption of neutrons

C controlled production of neutrons

D decreased leakage of neutrons

Review Detailed Answer

Correct Answer: decreased leakage of neutrons

The efficiency of a nuclear power plant in comparison to conventional and nuclear consideration is__________________?

A higher cost of nuclear fuel

B high initial cost

C high heat rejection in condenser

D lower temperature and pressure condi-tions

Review Detailed Answer

Correct Answer: lower temperature and pressure condi-tions

The fuel needed, with reflector in nuclear power plant, in order to generate sufficient neutrons to sustain a chain reaction, would be________________?

A more

B less

C same

D zero

Review Detailed Answer

Correct Answer: less

A fission chain reaction in uranium can be developed by________________?

A slowing down fast neutrons so that Uz fission continues by slow motion neutrons

B accelerating fast neutrons

C absorbing all neutrons

D using moderator

Review Detailed Answer

Correct Answer: slowing down fast neutrons so that Uz fission continues by slow motion neutrons

In order to have constant clain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be________________?

A greater than 1.0

B less than 1.0

C equal to zero

D equal to 1.0

Review Detailed Answer

Correct Answer: equal to 1.0

The following present serious difficulty in designing reactor shield_________________?

A alpha particles

B beta particles

C thermal neutrons

D fast neutrons and gamma rays

Review Detailed Answer

Correct Answer: fast neutrons and gamma rays

In a fission process, maximum %age of energy is released as___________________?

A kinetic energy of neutrons

B kinetic energy of fission products

C instantaneous release of gamma rays

D gradual readioactive decay of fission products

Review Detailed Answer

Correct Answer: kinetic energy of fission products

In triggering fission, the following types of neutrons are desirable_________________?

A fast moving

B slow moving

C critical neutrons

D neutrons at rest

Review Detailed Answer

Correct Answer: slow moving

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

The coolant used in boiling water reactor is________________?

The most practical fuel for a thermo-nuclear reactor, both from econocical and nuclear consideration is____________________?

The presence of reflector in nuclear power plants results in___________________?

The efficiency of a nuclear power plant in comparison to conventional and nuclear consideration is__________________?

The fuel needed, with reflector in nuclear power plant, in order to generate sufficient neutrons to sustain a chain reaction, would be________________?

A fission chain reaction in uranium can be developed by________________?

In order to have constant clain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be________________?

The following present serious difficulty in designing reactor shield_________________?

In a fission process, maximum %age of energy is released as___________________?

In triggering fission, the following types of neutrons are desirable_________________?