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Mechanical Engineering

If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys

Engineering Mechanics, Mechanical Engineering /
Question: If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys
[A].

first

[B].

second

[C].

third

Answer: Option B

Explanation:

No answer description available for this question.

If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys Read More »

Engineering Mechanics, Mechanical Engineering

A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is

Engineering Mechanics, Mechanical Engineering /
Question: A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is
[A].

reversible

[B].

non-reversible

[C].

ideal

Answer: Option A

Explanation:

No answer description available for this question.

A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is Read More »

Engineering Mechanics, Mechanical Engineering

A machine which is not capable of doing any work in the reversed direction, after the effort is removed, is called a reversible machine.

Engineering Mechanics, Mechanical Engineering /
Question: A machine which is not capable of doing any work in the reversed direction, after the effort is removed, is called a reversible machine.
[A].

True

[B].

False

Answer: Option B

Explanation:

No answer description available for this question.

A machine which is not capable of doing any work in the reversed direction, after the effort is removed, is called a reversible machine. Read More »

Engineering Mechanics, Mechanical Engineering

If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is

Engineering Mechanics, Mechanical Engineering /
Question: If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is
[A].

30°

[B].

60°

[C].

90°

[D].

120°

Answer: Option D

Explanation:

No answer description available for this question.

If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is Read More »

Engineering Mechanics, Mechanical Engineering

A machine which is capable of doing work in the reversed direction, after the effort is removed, is called a non-reversible machine.

Engineering Mechanics, Mechanical Engineering /
Question: A machine which is capable of doing work in the reversed direction, after the effort is removed, is called a non-reversible machine.
[A].

Yes

[B].

No

Answer: Option B

Explanation:

No answer description available for this question.

A machine which is capable of doing work in the reversed direction, after the effort is removed, is called a non-reversible machine. Read More »

Engineering Mechanics, Mechanical Engineering

A machine having an efficiency greater than 50%, is known as

Engineering Mechanics, Mechanical Engineering /
Question: A machine having an efficiency greater than 50%, is known as
[A].

reversible machine

[B].

non-reversible machine

[C].

neither reversible nor non-reversible machine

[D].

ideal machine

Answer: Option A

Explanation:

No answer description available for this question.

A machine having an efficiency greater than 50%, is known as Read More »

Engineering Mechanics, Mechanical Engineering