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Mechanical Engineering

To refrain from separation in subsonic nozzles, the expansion angle must not be more than            

» Thermal Engineering 2 solved MCQs /
Question:

To refrain from separation in subsonic nozzles, the expansion angle must not be more than            

A.

10 degrees

B.

20 degrees

C.

30 degrees

D.

40 degrees

Answer» a. 10 degrees

Note: The above multiple-choice question is for all general and Competitive Exams in India. 

To refrain from separation in subsonic nozzles, the expansion angle must not be more than             Read More »

» Thermal Engineering 2 solved MCQs

Which of the following statement with respect to food preservation is true?

» Principles of Food Preservation solved MCQs /
Question:

Which of the following statement with respect to food preservation is true?

A.

leafy vegetables perish fast due to their high moisture content

B.

cereals have the highest requirements of moisture and soil types

C.

cereal can be grown with less labour and yield of food is high

D.

all of the mentioned

Answer» d. all of the mentioned

Note: The above multiple-choice question is for all general and Competitive Exams in India. 

Which of the following statement with respect to food preservation is true? Read More »

» Principles of Food Preservation solved MCQs

In Electrochemical machining, larger grain size causes which type of finish?

» Unconventional Machine Process (UMP) solved MCQs /
Question:

In Electrochemical machining, larger grain size causes which type of finish?

A.

smoother

B.

rougher

C.

finer

D.

all of the mentioned

Answer» b. rougher

Note: The above multiple-choice question is for all general and Competitive Exams in India. 

In Electrochemical machining, larger grain size causes which type of finish? Read More »

» Unconventional Machine Process (UMP) solved MCQs

Why is wet compression not preferred?

» Thermal Engineering 2 solved MCQs /
Question:

Why is wet compression not preferred?

A.

the liquid refrigerant can be trapped in the head of cylinder

B.

this may damage the valves or cylinder head

C.

liquid refrigerant can wash away the lubricating oil thus accelerating wear

D.

all of the mentioned

Answer» d. all of the mentioned

Note: The above multiple-choice question is for all general and Competitive Exams in India. 

Why is wet compression not preferred? Read More »

» Thermal Engineering 2 solved MCQs