Velocity ratio of a machine is the ratio of load lifted to the effort applied.
56) Which of the following statement is wrong?
Answer is:
The velocity ratio of a machine is the ratio of load lifted to the effort applied.
Explanation:
Related Engineering Mechanics MCQ with Answers
Answer is:
second
Answer is:
increasing the length of the handle
Answer is:
equal to
Explanation:
A perfect frame is that which is composed of members just sufficient to keep it in equilibrium, when loaded, without any change in its shape. A perfect frame should satisfy the following expression:
n = 2j-3
where
n = Number of members, and
j = Number of joints.
An imperfect frame is one which does not satisfy the above equation (n = 2j — 3). The imperfect frame which has number of members (n) less than 2j – 3, is known as deficient frame. If the number of members are greater than 2j – 3, Then the imperfect frame is known redundant frame.
Answer is:
either (B) or (C)
Explanation:
A perfect frame is that which is composed of members just sufficient to keep it in equilibrium, when loaded, without any change in its shape. A perfect frame should satisfy the following expression:
n = 2j-3
where
n = Number of members, and
j = Number of joints.
An imperfect frame is one which does not satisfy the above equation (n = 2j — 3). The imperfect frame which has number of members (n) less than 2j – 3, is known as deficient frame. If the number of members are greater than 2j – 3, Then the imperfect frame is known redundant frame.