Mechanical Engineering

The ratio of the useful heat drop to the isentropic heat drop is called                          

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Question:

The ratio of the useful heat drop to the isentropic heat drop is called                          

A.

condenser efficiency

B.

nozzle efficiency

C.

vacuum efficiency

D.

boiler efficiency

Answer» b. nozzle efficiency

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

Which of the given reasons, is NOT a valid reason for packaging of food items?

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Question:

Which of the given reasons, is NOT a valid reason for packaging of food items?

A.

security and portion control

B.

marketing and convenience

C.

protection and information transmission

D.

none of the mentioned

Answer» d. none of the mentioned

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

In a simple band brake, when direction of rotation of drum is changed from counter clockwise direction, the braking torque____.

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Question:

In a simple band brake, when direction of rotation of drum is changed from counter clockwise direction, the braking torque____.

A.

remains unchanged

B.

is increased

C.

is decreased

D.

is unpredictable

Answer» b. is increased

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

How are active liquids of nuclear waste disposed?

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Question:

How are active liquids of nuclear waste disposed?

A.

stored in concrete tanks and buried underground

B.

stored in concrete tanks and buried in sea

C.

mixed with other chemicals and left into free atmosphere

D.

they are reused and burnt away in gaseous fumes

Answer» a. stored in concrete tanks and buried underground

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