Mechanical Engineering

Which of the following is true about Sound Ultrasound?

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Question:

Which of the following is true about Sound Ultrasound?

A.

generates mechanical energy to enhance chemical action on surfaces

B.

scrubbing action loosens the dirt particles and cleans the food particle

C.

generates mechanical energy to enhance chemical action on surfaces & scrubbing action loosens the dirt particles and cleans the food particle

D.

none of the mentioned

Answer» c. generates mechanical energy to enhance chemical action on surfaces & scrubbing action loosens the dirt particles and cleans the food particle

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

In velocity compounded turbines flow passage is from                          

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Question:

In velocity compounded turbines flow passage is from                          

A.

moving blades to fixed nozzles

B.

fixed nozzles to moving blades

C.

fixed blades to moving nozzles

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. 

Coefficient of discharge is _____________

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Question:

Coefficient of discharge is _____________

A.

directly proportional to coefficient of discharge

B.

inversely proportional to square of the coefficient of discharge

C.

inversely proportional to coefficient of discharge

D.

directly proportional to square of coefficient of discharge

Answer» b. inversely proportional to square of the coefficient of discharge

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

Pass-out turbines are used in which of these cases?

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Question:

Pass-out turbines are used in which of these cases?

A.

relatively high back pressure

B.

small heating requirement

C.

only relatively low back pressure

D.

both relatively high back pressure and small heating requirement

Answer» d. both relatively high back pressure and small heating requirement

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