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Engineering Mechanics

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

A lifting machine lifts a load of 1000N through a distance of 0.2 m by means of an effort of 200N through a distance of 1m. This machine is an ideal one.

Engineering Mechanics, Mechanical Engineering /
Question: A lifting machine lifts a load of 1000N through a distance of 0.2 m by means of an effort of 200N through a distance of 1m. This machine is an ideal one.
[A].

Correct

[B].

Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

A lifting machine lifts a load of 1000N through a distance of 0.2 m by means of an effort of 200N through a distance of 1m. This machine is an ideal one. Read More »

Engineering Mechanics, Mechanical Engineering

If the efficiency of a lifting machine is kept constant, its velocity ratio is __________ propotional to its mechanical advantage.

Engineering Mechanics, Mechanical Engineering /
Question: If the efficiency of a lifting machine is kept constant, its velocity ratio is __________ propotional to its mechanical advantage.
[A].

directly

[B].

inversely

Answer: Option A

Explanation:

No answer description available for this question.

If the efficiency of a lifting machine is kept constant, its velocity ratio is __________ propotional to its mechanical advantage. Read More »

Engineering Mechanics, Mechanical Engineering

The angle between two forces when the resultant is maximum and minimum respectively are

Engineering Mechanics, Mechanical Engineering /
Question: The angle between two forces when the resultant is maximum and minimum respectively are
[A].

0° and 180°

[B].

180° and 0°

[C].

90° and 180°

[D].

90° and 0°

Answer: Option A

Explanation:

No answer description available for this question.

The angle between two forces when the resultant is maximum and minimum respectively are Read More »

Engineering Mechanics, Mechanical Engineering