A thin circular disc is rolling with a uniform linear speed, along a straight path on a plane surface. Which of the following statement is correct in this regard ?

For an isochronous Hartnell governor (where r₁ and r₂ = Maximum and minimum radius of rotation of balls respectively, S₁ and S₂ = Maximum and minimum force exerted on the sleeve respectively, and M = Mass on the sleeve)

The coriolis component of acceleration acts

The velocity of piston in a reciprocating steam engine is given by (where ω = Angular velocity of crank, r = Radius of crank pin circle, θ = Angle turned by crank from inner dead centre, and n = Ratio of length of connecting rod to the radius of crank)

Creep in belt drive is due to

The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)

The wear of bearing is proportional to velocity and pressure.

For an isochronous Hartnell governor (where r₁ and r₂ = Maximum and minimum radius of rotation of balls respectively, S₁ and S₂ = Maximum and minimum force exerted on the sleeve respectively, and M = Mass on the sleeve)

When the elements of a pair are kept in contact by the action of external forces, the pair is said to be a

The transmissibility, for all values of damping factor, will be less than unity, if ω/ω_n is

The wear of bearing is proportional to velocity and pressure.

The effect of swaying couple in a locomotive is resisted by the side pressure between the flanges of the tyres of the wheel and the inside of the rails.

For low and moderate speed engines, the cam follower should move with

A slender shaft supported on two bearings at its ends carries a disc with an eccentricity e from the axis of rotation. The critical speed of the shaft is N_c. If the disc is replaced by a second one of same mass but mounted with an eccentricily 2 e, then the critical speed of the shaft in the second case is

The effect of swaying couple in a locomotive is resisted by the side pressure between the flanges of the tyres of the wheel and the inside of the rails.

Which of the following is a spring controlled governor?

Which of the following is a spring controlled governor?

A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body)

In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called

In a band and block brake, the ratio of tensions on tight side and slack side of the band is (where μ = Coefficient of friction between the blocks and the drum, θ = Semi-angle of each block subtending at the centre of drum, and n = Number of blocks)

The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

For the brake to be self locking, the force P at C shown in the below figure, should

The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)

Which of the following statement is wrong?

For an involute gear, the ratio of base circle radius and pitch circle radius is equal to

The centrifugal tension in belts

A type-writer constitutes a machine.

The Klein's diagram is useful to find

For an involute gear, the ratio of base circle radius and pitch circle radius is equal to

If ω/ω_n is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

The mechanism in which two are turning pairs and two are sliding pairs, is called a

A type-writer constitutes a machine.

The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the right. The effect of gyroscopic couple on the aeroplane will be to dip the nose and raise the tail.

At the nodal point in a shaft, the amplitude for torsional vibration will be

When there is a reduction in amplitude over every cycle of vibration, then the body is said to have

In a four bar chain or quadric cycle chain

The maximum fluctuation of speed is the

When there is a reduction in amplitude over every cycle of vibration, then the body is said to have

In a four bar chain or quadric cycle chain

A watt's governor can work satisfactorily at speeds from

A chain consisting of four links and four joints is called a kinematic chain.

The coriolis component of acceleration acts

In a Hartnell governor, the compression of the spring is __________ the lift of the sleeve.

Due to slip of belt, the velocity ratio of the belt drive increases.

The factional torque for square thread at the mean radius r while raising load W is given by

In a multiple V-belt drive, all the belts should stretch at the same rate.

When a body is subjected to transverse vibrations, the stress induced in a body will be

Which of the following is an open pair?

In a reciprocating engine, usually __________ of the reciprocating masses are balanced.

The frictional torque transmitted in a flat pivot bearing with assumption of uniform pressure is __________ as compared to uniform wear.