The maximum efficiency of a scres jack having square threads and frict – McqOptions

MCQOPTIONS

1.	The maximum efficiency of a scres jack having square threads and friction angle of 30 degree will be
A.	20%
B.	11%
C.	5%
D.	33%
E.	9%
Answer» E.

Discussion

No Comment Found

Related MCQs

A bullet is fired vertically upwards with a velocity of 2200 ft/s. Bullet ascends to a height of
A compressure force in boom in above problem is
The slope on the road generally provided on the curves is known as
A projectile is shot straight up with vo = 40 m/s. After how many seconds will it return if drag is neglected?
A ball A of mass 0.25 kg moving on a smooth horizontal table with a velocity of 10 m/s strikes an identical stationary ball B on the table. If the impact is perfectly elastic, the velocity of the ball B just after the impact will be
During planetary motion which of the following remains constant?
Centroid of the are of circle shown in adjacement figure is
What force is necessary to hold a weight of 100 kg suspended on a rope wrapped 3 times around a post (
A stone weighing 20 N is whirling in a vertical circle at the extremity of a string 100 cm long. The tension in the string will be zero
A framed structure is perfect if it contains members equal to