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You Are On Multi Choice Question Bank SET 1498

74901. A disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied to the disc causing precession will be (where I = Mass moment of inertia of the disc, and ωP = Angular velocity of precession of the axis of spin)

74902. The height of a Watt's governor (in metres) is equal to (where N = Speed of the arm and ball about the spindle axis)

74903. V-belts are usually used for

74904. Sensitiveness of the governor is defined as the ratio of the

74905. The two parallel and coplaner shafts are connected by gears having teeth parallel to the axis of the shaft. This arrangement is known as

74906. The relative velocity of B with respect to A in a rigid link AB is

74907. In a pantograph, all the pairs are

74908. The velocity of a body moving with simple harmonic motion is __________ at the mean position.

74909. A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2 L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will

74910. If the pressure angle is __________ , a reciprocating follower will jam in its bearings.

74911. The D-slide valve is also known as

74912. When the load on the engine increases, it becomes necessary to increase the supply of working fluid and when the load decreases, less working fluid is required. The supply of the working fluid to the engine is controlled by a

74913. Which of the following was the capital of India in the year of 1910?

74914. The magnitude of velocities of the points on a rigid link is

74915. A pendulum type governor is a Watt governor.

74916. In a single slider crank chain

74917. The mechanism consisting of three turning pairs and one sliding pair, is called a

74918. A system of masses rotating in different parallel planes is in dynamic balance if the

74919. Elasticity coefficient of object is ------ on heating?

74920. The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called

74921. A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become

74922. The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure, is

74923. The axis of precession is __________ to the plane in which the axis of spin is going to rotate.

74924. Bifilar suspension method is used to find the

74925. The equation of motion for a vibrating system with viscous damping is If the roots of this equation are real, then the system will be

74926. The motion between a pair when limited to a definite direction, irrespective of the direction of force applied, is known as

74927. The motion of a shaft in a circular hole is an example of

74928. A spring controlled governor is said to be unstable when the controlling force

74929. The equivalent length of a simple pendulum depends upon the distance between the point of suspension and the centre of gravity.

74930. Balancing of rotating and reciprocating parts of an engine is necessary when it runs at

74931. When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

74932. In a locomotive, the resultant unbalanced force due to the two cylinders along the line of stroke, is known as

74933. When no external force acts on a body, after giving it an initial displacement, the body is said to have free vibrations.

74934. Which of the following is an example of sliding pair?

74935. The coriolis component of acceleration exists whenever apoint moves along a path that has

74936. In a steam engine, the distance by which the inner edge of the D-slide valve overlaps the steam port is called lead.

74937. A shaft of mass (mc)and stiffness (s) is fixed at one end and carries a mass (m) at the other end. The natural frequency of its transverse vibration is same as for longitudinal vibration.

74938. The idiom that means “face the problem” is:?

74939. The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap.

74940. The stress induced in a body will be shear stress, when it is subjected to

74941. A machine mounted on a single coil spring has a period of free vibration of tp . If the spring is cut into four equal parts and placed in parallel and the machine is mounted on them, then the period of free vibration of the new system will become

74942. When a body is subjected to longitudinal vibrations, the stress induced in a body will be tensile or compressive stress.

74943. If the number of links in a mechanism are equal to l, then the number of possible inversions are equal to

74944. Effort of a governor is the

74945. Zener diode is used for voltage?

74946. Where is the headquarters of Economic and Social Commission for Western Asia?

74947. Chattampi Swami Memorial is situated in?

74948. The total number of instantaneous centres for a mechanism consisting of n links are

74949. National Productivity council was set up in?

74950. The partial balancing means

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