Engineering :: Applied Mechanics

@ : Home > Mechanical Engineering > Applied Mechanics

191.

Which of the following is not a lever of the first order?

A.	Wheel barrow	B.	Pair of scissors
C.	Ordinary balance	D.	Pair of Smith's tongs

192.

If there are 3 pulleys in the first system, then the velocity ratio of this system will be

A.	2	B.	4
C.	6	D.	8

193.

In the second system of pulleys, if there are two pulley blocks having 'n1' and 'n2' pulleys in the first and second pulley blocks respectively, then the velocity ratio of the whole system will be equal to

A.	2n1 + 2n2	B.	2n1 + n2
C.	n1 + n2	D.	n1 - n2

194.

In the third system of pulleys, if there are n number of pulleys then the velocity ratio of the system will be

A.	2n	B.	n
C.	2n-1	D.	2n - 2

195.

At a roller support the line of reaction and the roller base must be at an angle of

A.	not more than 60?	B.	not less than 60?
C.	60?	D.	90?

196.

TIES : STRUTS : :

A.	rolle support : hinge	B.	angle : tee
C.	compression : tension	D.	purlins : piers

197.

When horizontal range of a projectile equal to the distance through which projectile will rise, then the angle of projection of the particle will be equal to

A.	24?	B.	36?
C.	48?	D.	76?

198.

The curve of a catenary by nature is

A.	ellipse	B.	circular
C.	hyperbolic	D.	parabolic

199.

For a perfect frame having 13 members the number of joints must be

A.	6	B.	7
C.	8	D.	9

200.

If a particle charges its angular velocity from 30 to 35 rpm in 20 seconds then it has angular acceleration of

A.	10 rev/min2	B.	15 rev/min2
C.	20 rev/min2	D.	30 rev/min2