500 Best Applied Mechanics MCQ
Q9). If the gravitational accelerational at any place is doubled, the weight of a body, will
a).be reduced to half
b).be doubled
c).not be affected
d).none of these.
Correct Answer:
be doubled
Explanation:
Q10). A cable loaded with 0.5 tonne per horizontal metre span is stretched between supports in the same horizontal line 400 m apart. If central dip is 20 m, the minimum tension in the cable, will be
a).200 tonnes at the centre
b).500 tonnes at the centre
c).200 tonnes at the right support
d).200 tonnes at the left support.
Correct Answer:
500 tonnes at the centre
Explanation:
Q11). The Law of Polygon of Forces states that
a).if a polygen representing the forces acting at point in a body is closed, the forces are in equilibrium
b).if forces acting on a point can be represented in magnitde and direction by the sides of a polygon taken in order, then the resultant of the forces will be represented in magnitude and direction by the closing side of the polygon
c).if forces acting on a point can be represented of a polygon taken in order, their sides of a polygon taken in order, their resultant will be represented in magnitude and direction by the closing side of the polygon, taken in opposite order
d).if forces acting on a point can be represented in magnitude and direction by the sides of a polygon in order, the forces are in equilibrium.
Correct Answer:
if forces acting on a point can be represented of a polygon taken in order, their sides of a polygon taken in order, their resultant will be represented in magnitude and direction by the closing side of the polygon, taken in opposite order
Explanation:
Q12). Parallelogram Law of Forces states, “if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by
a).its longer side”
b).its shorter side”
c).the diagonal of the parallelogram which does not pass through the point of intersection of the forces”
d).the diagonal of the parallelogram which passes through the point of intersection of the forces”
Correct Answer:
the diagonal of the parallelogram which passes through the point of intersection of the forces”
Explanation:
Q13). Which one of the following statements is true ?
a).The tangent of the angle of friction is equal to coefficeint of friction
b).The angle of repose is equal to angle of friction
c).The tangent of the angle of repose is equal to coefficient of friction
d).All the above.
Correct Answer:
All the above.
Explanation:
Q14). The product of mass and velocity of a moving a body, is called
a).moment
b).momentum
c).power
d).impulse.
Correct Answer:
momentum
Explanation:
Q15). Engineer’s units of force, is
a).Newton in absolute units
b).Dyne in absolute units
c).Newton and dyne in absolute units
d).All the above.
Correct Answer:
Newton in absolute units
Explanation:
Q16). Joule is the unit of
a).work
b).force
c).power
d).torque
Correct Answer:
work
Explanation: