Related Questions
What is the correct answer?
4
The equivalent length of a simple pendulum which gives the same frequency as compound pendulum is
What is the correct answer?
4
For any system of coplanar forces, the condition of equilibrium is that the
A. Algebraic sum of the horizontal components of all the forces should be zero
B. Algebraic sum of the vertical components of all the forces should be zero
C. Algebraic sum of moments of all the forces about any point should be zero
What is the correct answer?
4
The loss of kinetic energy during inelastic impact, is given by (where m1 = Mass of the first body, m2 = Mass of the second body, and u1 and u2 = Velocities of the first and second bodies respectively.)
A. [m₁ m₂/2(m₁ + m₂)] (u₁ - u₂)²
B. [2(m₁ + m₂)/m₁ m₂] (u₁ - u₂)²
C. [m₁ m₂/2(m₁ + m₂)] (u₁² - u₂²)
D. [2(m₁ + m₂)/m₁ m₂] (u₁² - u₂²)
What is the correct answer?
4
The unit of force in S.I. system of units is
What is the correct answer?
4
A spherical body is symmetrical about its perpendicular axis. According to Routh's rule, the moment of inertia of a body about an axis passing through its centre of gravity is (where, M = Mass of the body, and S = Sum of the squares of the two semi-axes.)
What is the correct answer?
4
Centre of gravity of a thin hollow cone lies on the axis at a height of
A. One-fourth of the total height above base
B. One-third of the total height above base
C. One-half of the total height above base
D. Three-eighth of the total height above the base
What is the correct answer?
4
In ideal machines, mechanical advantage is __________ velocity ratio.
What is the correct answer?
4
The bodies which rebound after impact are called
C. Neither elastic nor inelastic bodies
What is the correct answer?
4
The friction experienced by a body, when in motion, is known as
What is the correct answer?
4
Forces are called concurrent when their lines of action meet in
What is the correct answer?
4
If a number of forces are acting at a point, their resultant will be inclined at an angle θ with the horizontal, such that
What is the correct answer?
4
A projectile is fired at an angle θ to the vertical. Its horizontal range will be maximum when θ is
What is the correct answer?
4
For a self locking machine, the efficiency must be
What is the correct answer?
4
According to the law of moments, if a number of coplanar forces acting on a particle are in equilibrium, then
A. Their algebraic sum is zero
B. Their lines of action are at equal distances
C. The algebraic sum of their moments about any point in their plane is zero
D. The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point.
What is the correct answer?
4
The wheels of a moving car possess
B. Kinetic energy of translation only
C. Kinetic energy of rotation only
D. Kinetic energy of translation and rotation both
What is the correct answer?
4
Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one
What is the correct answer?
4
One watt is equal to
What is the correct answer?
4
The acceleration of a particle moving with simple harmonic motion, at any instant is given by
What is the correct answer?
4
Two blocks A and B of masses 150 kg and 50 kg respectively are connected by means of a string as shown in the below figure. The tension in all the three strings __________ be same.
What is the correct answer?
4
A lead ball with a certain velocity is made to strike a wall, it falls down, but rubber ball of same mass and with same velocity strikes the same wall, it rebounds. Select the correct reason from the following:
A. Both the balls undergo an equal change in momentum
B. The change in momentum suffered by rubber ball is more than the lead ball
C. The change in momentum suffered by rubber ball is less than the lead ball
What is the correct answer?
4
The energy possessed by a body, for doing work by virtue of its position, is called
What is the correct answer?
4
Varingon's theorem of moments states that if a number of coplanar forces acting on a particle are in equilibrium, then
A. Their algebraic sum is zero
B. Their lines of action are at equal distances
C. The algebraic sum of their moments about any point in their plane is zero
D. The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point.
What is the correct answer?
4
A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if
A. The floor is smooth, the wall is rough
B. The floor is rough, the wall is smooth
C. The floor and wall both are smooth surfaces
D. The floor and wall both are rough surfaces
What is the correct answer?
4
The moment of inertia of a square of side a about its diagonal is
What is the correct answer?
4
The ratio of limiting friction and normal reaction is known as
A. Coefficient of friction
What is the correct answer?
4
The mechanical advantage of a lifting machine is the ratio of
A. Distance moved by effort to the distance moved by load
B. Load lifted to the effort applied
What is the correct answer?
4
The unit of energy in S.I. units is
What is the correct answer?
4
The power developed by a body acted upon by a torque T Newton metre (N - m) and revolving at ω radian/s is given by
D. T.ω/4500 (in kilowatts)
What is the correct answer?
4
The centre of gravity a T-section 100 mm × 150 mm × 50 mm from its bottom is
What is the correct answer?
4
Which of the following is the example of lever of first order?
C. Pair of clinical tongs