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You Are On Multi Choice Question Bank SET 507

25351. A number of forces acting simultaneously on a particle of a body

25352. The moment of inertia of the shaded portion of the area shown in below figure about the X-axis, is

25353. The force acting on a point on the surface of a rigid body may be considered to act

25354. A satellite is said to move in a synchronous orbit if it moves at an altitude of 36, 000 km with a maximum velocity of about

25355. Which among the following is an induced ovulator?

25356. A 49 kg lady stands on a spring scale in an elevator. During the first 5 sec, starting from rest, the scale reads 69 kg. The velocity of the elevator will be

25357. Pick up the correct statement from the following. A rubber ball when strikes a wall rebounds but a lead ball of same mass and velocity when strikes the same wall, falls down

25358. The instantaneous centre of a member lies at the point of intersection of two lines drawn at the ends of the member such that the lines are inclined to the direction of motion of the ends at

25359. A rod 5 m in length is moving in a vertical plane. When it is inclined at 60° to horizontal, its lower end is moving horizontally at 3 m/sec and upper end is moving in vertical direction. The velocity of its upper end, is

25360. A retarding force on a body does not

25361. The unit of force in C.G.S. system of units, is called

25362. The metal present in insulin?

25363. From a circular plate of a diameter 6 cm is cut out a circle whose diameter is equal to the radius of the plate. The C.G. of the remainder from the centre of circular plate is at a distance of

25364. The force which produces an acceleration of 1 m/sec2 in a mass of one kg, is called

25365. The units of inertia of mass, are

25366. A sphere is resting on two planes BA and BC which are inclined at 45° and 60° respectively with the horizontal. The reaction on the plane BA will be

25367. A projectile is fired at an angle θ to the vertical. Its horizontal range will be maximum when θ is

25368. A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The mechanical advantage of the lifting machine is

25369. The centre of gravity of a trapezoidal dam section whose top width is a, bottom width is b and the vertical side is a, from its vertical face is

25370. One half of a vibration of a body, is called

25371. On a ladder resisting on a smooth ground and leaning against a rough vertical wall, the force of friction acts

25372. The acceleration of a particle moving along the circumference of a circle with a uniform speed, is directed

25373. From the circular plate of a diameter 6 cm is cut out a circular plate whose diameter is equal to radius of the plate. The c.g. of the remainder shifts from the original position through

25374. If a particle moves with a uniform angular velocity ω radians/sec along the circumference of a circle of radius r, the equation for the velocity of the particle, is

25375. In simple harmonic motion, acceleration of a particle is proportional to

25376. A heavy ladder resting on a floor and against a vertical wall may not be in equilibrium, if

25377. In a simple screw jack, the pitch of the screw is 9 mm and length of the handle operating the screw is 45 cm. The velocity ratio of the system is

25378. To double the period of oscillation of a simple pendulum

25379. For a particle moving with a simple harrmonic motion, the frequency is

25380. According to Kennedy's theorem, if three bodies have plane motions, their instantaneous centres lie on

25381. 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

25382. If α is the angular acceleration of a compound pendulum whose angular displace ment is θ, the frequency of the motion is

25383. If two forces each equal to T in magnitude act at right angles, their effect may be neutralised by a third force acting along their bisector in opposite direction whose magnitude will be

25384. Energy may be defined as

25385. The intrinsic equation of catenary is

25386. A ball which is thrown upwards, returns to the ground describing a parabolic path during its flight

25387. Angular acceleration of a particle may be expressed as

25388. Two loads of 50 kg and 75 kg are hung at the ends of a rope passing over a smooth pulley shown in below figure. The tension in the string is :

25389. Total no of instantaneous centres of a machine having n links, is

25390. A weight of 100 kg is supported by a string whose ends are attached to pegs A and B at the same level shown in below figure. The tension in the string is

25391. A train weighing 196 tonnes experiences a frictional resistance of 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

25392. The reaction at the support B of the beam shown in below figure is

25393. A stone is whirled in a vertical circle, the tension in the string, is maximum

25394. He was so absorbed ......... his work that he didn’t raise his head.?

25395. If a spherical body is symmetrical about its perpendicular axes, the moment of inertia of the body about an axis passing through its centre of gravity as given by Routh's rule is obtained by dividing the product of the mass and the sum of the squares of two semi-axes by n where n is

25396. The angle of projection for a range is equal to the distance through which the particle would have fallen in order to acquire a velocity equal to the velocity of projection, will be

25397. A particle executes a simple harmonic motion. While passing through the mean position, the particle possesses

25398. Use correct prepositions wherever necessary. Don’t be angry ......... me .?

25399. Varigon's theorem of moments states

25400. 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 fligh up the inclined plane and down the inclined plane, will be

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