# Mechanical Engineering Mcqs

Mechanical Engineering Mcqs

The unit of force in S.I. units is
[A] kilogram
[B] newton
[C] watt
[D] dyne
[E] joule
The unit of work or energy in S.I. units is
[A] newton
[B] pascal
[C] kilogram meter
[D] watt
[E] joule
The unit of power in S.I. units is
[A] newton meter
[B] watt
[C] joule
[D] kilogram meter/sec
[E] pascal per sec
Forces are called concurrent when their lines of action meet in
[A] one point
[B] two points
[C] plane
[D] perpendicular planes
[E] different planes
A force acting on a body may
[A] introduce internal stresses
[B] balance the other forces acting on it
[C] retard its motion
[D] change its motion
[E] all of the above
Effect of a force on a body depends upon
[A] magnitude
[B] direction
[C] position or line of action
[D] all of the above
[E] none of the above
If a number of forces act simultaneously on a particle, it is possible
[A] not a replace them by a single force
[B] to replace them by a single force
[C] to replace them by a single force through C.G.
[D] to replace them by a couple
[E] to replace them by a couple and a force.
A force is completely defined when we specify
[A] magnitude
[B] direction
[C] point of application
[D] all of the above
[E] none of the above
Which of the following do not have identical dimensions ?
[A] Momentum and impulse
[B] Torque and energy
[C] Torque and work
[D] Kinetic energy and potential energy
[E] Moment of a force and angular momentum
Which of the following is not the unit of distance ?
[A] angstrom
[B] light year
[C] micron
[D] millimetre
[E] milestone
Which of the following is not the unit of power ?
[A] kW (kilowatt)
[B] hp (horse power)
[C] kcal/sec
[D] kg m/sec
[E] kcal/kg sec
Which of the following is not the unit of pressure ?
[A] kg/cm
[B] ata
[C] atmosphere
[D] mm of wcl
[E] newton
The weight of a body is due to
[A] centripetal force of earth
[B] gravitational pull exerted by the earth
[C] forces experienced by body in atmos-phere
[D] force of attraction experienced by par-ticles
[E] gravitational force of attraction towards the centre of the earth