Related Questions
What is the correct answer?
4
A train weighing 196 tonnes experiences a frictional resistance of 5 11/22 per tonne. The speed of the train at the top of a down gradient 1 in 78.4 is 36 km/hour. The speed of the train after running 1 km down the slope, is
What is the correct answer?
4
The total kinetic energy of a hoop of mass 2 kg and radius 4 m sliding with linear velocity 8 m/sec and angular velocity 5 radian/sec is
What is the correct answer?
4
Which of the following represents the state of neutral equilibrium?
A. A cube resting on one edge
B. A smooth cylinder lying on a curved surface
C. A smooth cylinder lying on a convex surface
What is the correct answer?
4
The member which does not carry zero force in the structure shown in below figure, is
What is the correct answer?
4
A ball of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/sec hits an identical stationary ball B on the table. If the impact is perfectly plastic, the velocity of the ball B just after impact would be
What is the correct answer?
4
When a circular wheel rolls on a straight track, then the shape of body centrode and space centrode respectively are
A. Straight line and parabola
B. Straight line and circle
C. Circle and straight line
What is the correct answer?
4
If the angle of projection is double the angle of inclination (α) of the plane on which particle is projected, the ratio of times of flight up the inclined plane and down the inclined plane, will be
What is the correct answer?
4
The load shared by the member BC of the structure shown in below figure is
What is the correct answer?
4
The tension in a cable supporting a lift
A. Is more when the lift is moving downwards
B. Is less when the lift is moving upwards
C. Remains constant whether its moves downwards or upwards
D. Is less when the lift is moving downwards
What is the correct answer?
4
If the angular distance, 0 = 2t3 - 3t², the angular acceleration at t = 1 sec. is
What is the correct answer?
4
If a body is lying on a plane whose inclination with the horizontal is less than the angle of friction, then? (i) A force is required to move the body upwards (ii) A force is required to move the body downward (iii) The body will not be in equilibrium The correct answer is
What is the correct answer?
4
If a set of given forces are such that their free vectors build a closed polygon, then
A. The resultant force and resultant couple are always zero
B. The resultant force is zero but resultant couple is not zero
C. The resultant force is zero but resultant couple may not be zero
D. The resultant force and resultant couple both may not be zero
What is the correct answer?
4
If the radius of the earth is 600 km the height of a mountain above sea level at the top of which a beat seconds pendulum at sea level, looses 27 seconds a day, is
What is the correct answer?
4
In case of S.H.M. the period of oscillation (T), is given by
What is the correct answer?
4
The C.G. of a hemisphere from its base measured along the vertical radius is at a distance of
What is the correct answer?
4
Pick up the incorrect statement from the following. In a simple harmonic motion
A. Velocity is maximum at its mean position
B. Velocity is minimum at the end of the stroke
C. Acceleration is minimum at the end of the stroke
D. Acceleration is zero at the mean position
What is the correct answer?
4
The direction of projection should bisect the angle between the inclined plane and the vertical for a range of a projectile on inclined plane
What is the correct answer?
4
A vehicle weighing w kg is to run on a circular curve of radius r. If the height of its centre of gravity above the road level is h and the distance between the centres of wheels is 2a, the maximum velocity, in order to avoid over turning, will be
What is the correct answer?
4
If the linear velocity of a point on the rim of a wheel of 10 m diameter, is 50 m/sec, its angular velocity will be
What is the correct answer?
4
To attain the synchronous orbit, the launch of a satellite, is done from a place
What is the correct answer?
4
The gravitational force makes a satellite go round the earth in a circular orbit, if it is projected with an initial velocity of
A. 8.04 km/sec at a height of 285 km
B. 11.11 km/sec at a height of 37,400 km
C. 11.26 km/sec, the satellite escapes the pull of the earth
What is the correct answer?
4
Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis?
A. Disc with larger density
B. Disc with smaller density
C. Both discs will have same rotational inertia
What is the correct answer?
4
The total time of collision and restitution of two bodies, is called
What is the correct answer?
4
A 50 kg boy climbs up a 8 m rope in gymnasium in 10 sec. The average power developed by the boy is approximately
What is the correct answer?
4
For a simple pendulum, the period of one oscillation is
What is the correct answer?
4
A rigid body is in a stable equilibrium if the application of any force
A. Can raise the CG of the body but cannot lower it
B. Tends to lower the CG of the body
C. Neither raises nor lowers the CG of the body
What is the correct answer?
4
The ratio of the speed of a rolling cylinder to the speed of sliding cylinder is
What is the correct answer?
4
Principle of Transmissibility of Forces states that, when a force acts upon a body, its effect is
A. Maximum if it acts at the centre of gravity of the body
B. Different at different points on its line of
C. Same at every point on its line of action
D. Minimum if it acts at the C.G. of the body
What is the correct answer?
4
An ordinate in a funicular polygon represents
What is the correct answer?
4
The apparent weight of a man in a moving lift is less than his real weight when it is going down with