115) The heat and mechanical energies are mutually convertible. This statement was established by

Boyle

Charles

Joule

none of these

Answer is:

Joule

Thermodynamics MCQ with Answers

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116) For the same compression ratio, the efficiency of Diesel cycle is __________ Otto cycle.

greater than

less than

equal to

none of these

Answer is:

less than

117) Mond gas is obtained by

partial combusion of coal, coke, anthracite coal or charcoal in a mixed air steam blast

carbonisation of bituminous coal

passing steam over incandescent coke

passing air and a large amount of steam over waste coal at about 650 Degree Centigrade

Answer is:

passing air and a large amount of steam over waste coal at about 650 Degree Centigrade

118) The natural solid fuel is

wood

coke

anthracite coal

pulverised coal

Answer is:

wood

119) The condition for the reversibility of a cycle is

the pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process

all the processes, taking place in the cycle of operation, must be extremely slow

the working parts of the engine must be friction free

all of the above

Answer is:

all of the above

Thermodynamics MCQ with Answers

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115) The heat and mechanical energies are mutually convertible. This statement was established by

Joule

Thermodynamics MCQ with Answers

Related Thermodynamics MCQ with Answers

116) For the same compression ratio, the efficiency of Diesel cycle is __________ Otto cycle.

less than

117) Mond gas is obtained by

passing air and a large amount of steam over waste coal at about 650 Degree Centigrade

118) The natural solid fuel is

wood

119) The condition for the reversibility of a cycle is

all of the above

Thermodynamics MCQ with Answers