www.ThinkITI.com

Home
MCQ
Search
Free Apps
Important
Study Groups
Contact Us
Policy

Home
MCQ
Objective Questions
Engineering
Civil
Civil Set-1
Structural Engineering III
74

Structural Engineering III MCQ with Answers

74) The effort required to lift a load W on a screw jack with helix angle a and angle of friction <j) is equal to

Wtan(a + <)>)

Wtan(a-<)>)

Wcos(a + <t>)

Wsin(a + <(>)

Answer is:

Wtan(a + <)>)

Structural Engineering III MCQ with Answers

For more MCQ's Click Here

Related Structural Engineering III MCQ with Answers

75) A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is \i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will

remain horizontal

slant up towards direction of pull

slant down towards direction of pull

unpredictable

Answer is:

slant down towards direction of pull

76) A particle inside a hollow sphere of radius r, having coefficient of friction -rr can rest upto height of

r/2

r/A

r/%

0.134 r

Answer is:

0.134 r

77) The algebraic sum of moments of the forces forming couple about any point in their plane is

equal to the moment of the couple

constant

both of above are correct

both of above are wrong

Answer is:

equal to the moment of the couple

78) A single force and a couple acting in the same plane upon a rigid body

balance each other

cannot balance each other

produce moment of a couple

are equivalent

Answer is:

cannot balance each other

Structural Engineering III MCQ with Answers

For more MCQ's Click Here