74752. In a Hartnell governor, the compression of the spring is __________ the lift of the sleeve.
74753. In vibration isolation system, if ω/ωn > 2 , then for all values of damping factor, the trans-missibility (i.e. the ratio of the force transmitted to the force applied) will be less than unity.
74754. Diode was discovered by?
74755. The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by
74756. For the brake to be self locking, the force P at C shown in the below figure, should
74757. In a four bar chain or quadric cycle chain
74758. A single degree of freedom system is given by , with usual notations. It represents
74759. In a Hartnell governor, the lift of the sleeve is given by (where r1 and r2 = Max. and min. radii of rotation, x = Length of ball arm of the lever, and y = Length of sleeve arm of the lever)
74760. Use suitable alternative: His speech was ......... too long.?
74761. When a mechanism is required to transmit power or to do some particular type of work, then it becomes a machine.
74762. The transmissibility, for all values of damping factor, will be less than unity, if ω/ωn is
74763. Which of the following is used to control the speed variations of the engine caused by the fluctuations of the engine turning moment?
74764. The ratio of driving tensions for rope drive is same as that of V-belt drive.
74765. A Hartnell governor is a
74766. Frequency of vibrations is usually expressed in
74767. The relation between number of pairs (p) forming a kinematic chain and the number of links (l) is
74768. The cam follower generally used in air-craft engines is
74769. In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as
74770. Hundred miles ......... not a great distance.?
74771. If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach
74772. The factional torque for square thread at the mean radius r while raising load W is given by
74773. A system in dynamic balance implies that
74774. The example of completely constrained motion is a
74775. In involute gears, the pressure angle is
74776. A shaft carrying three rotors will have
74777. Muhammad- bin-Tughlaq transferred his capital from Delhi to Daulatabad?
74778. In a mechanism, the fixed instantaneous centres are those centres which
74779. Which of the following statements regarding laws governing the friction between dry surfaces are correct?
74780. The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is
74781. A combination of kinematic pairs, joined in such a way that the relative motion between the links is completely constrained, is called a
74782. A link or element need not to be a rigid body, but it must be a resistant body.
74783. Which of the following statement is correct for gears ?
74784. In which region of India was the Suharawadi order of Sufism popular?
74785. In a screw jack, the effort required to lift the load W is given by (where α = Helix angle, and φ = Angle of friction)
74786. In order to facilitate starting of locomotive in any position, the cranks of a locomotive with two cylinders, are placed at
74787. The coriolis component of acceleration leads the sliding velocity by
74788. The length of a simple pendulum which gives the same frequency as the compound pendulum, is
74789. Which of the following is a spring controlled governor?
74790. 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.
74791. At the nodal point in a shaft, the amplitude for torsional vibration will be
74792. When a body is subjected to transverse vibrations, the stress induced in a body will be
74793. The magnitude of linear velocity of a point B on a link AB relative to point A is (where ω = Angular velocity of the link AB)
74794. 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 Nc. 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
74795. The mechanism in which two are turning pairs and two are sliding pairs, is called a
74796. In a multiple V-belt drive, all the belts should stretch at the same rate.
74797. In a reciprocating engine, usually __________ of the reciprocating masses are balanced.
74798. Buddha was born in the year?
74799. The first Hydrogen bomb is tested by the United states in .........?
74800. Where is the headquarters of World Council of Churches (WCC)?