74951. Which of the following statement is correct as regard to the difference between a machine and a structure?
74952. The coriolis component of acceleration depends upon
74953. A mechanism __________ for transmitting or transforming motion.
74954. The distance moved by the valve from one end to the other end is called valve travel.
74955. The Klein's method of construction for reciprocating engine mechanism
74956. A Watt's governor is a spring loaded governor.
74957. The velocity of the rubbing surface __________ with the distance from the axis of the bearing.
74958. The brake commonly used in railway trains is
74959. If she comes I ......... call you.?
74960. A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when
74961. The acceleration of the particle moving with simple harmonic motion is __________ at the mean position.
74962. In a differential band brake as shown in the below figure, if the length OB is greater than OA, then the force P at C should act in the downward direction.
74963. ......... is generally considered to be the world’s first urban civilization.?
74964. The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as
74965. The tractive force is maximum or minimum when the angle of inclination of crank with the line of stroke (θ) is equal to
74966. A point on a connecting link (excluding end points) of a double slider crank mechanism traces a
74967. The coefficient of friction is the ratio of the limiting friction to the normal reaction between the two bodies.
74968. Which of the following governor is used to drive a gramophone?
74969. In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to
74970. The ball and socket joint is an example of screw pair.
74971. A friction circle is a circle drawn when a journal rotates in a bearing. Its radius depends upon the coefficient of friction and the
74972. In the Constitution, setting up of village panchayats finds mention under?
74973. Which was the most important centre of Salt Sathyagraha in Malabar?
74974. The relation between the controlling force (Fc) and radius of rotation (r) for a stable spring controlled governor is
74975. ABCD is a four bar mechanism in which AB = 310 mm and CD = 450 mm. AB and CD are both perpendicular to the fixed link AD, as shown in the below figure. If the velocity of B at this condition is v. Then the velocity of C is
74976. A rotary internal combustion engine has __________ cylinders.
74977. The power transmitted by a belt is maximum when the maximum tension in the belt is __________ of centrifugal tension.
74978. ‘Wince’ is related to pain in the same way as ‘prostration’ is related to ..........?
74979. The component of the acceleration, perpendicular to the velocity of the particle, at the given instant is called
74980. Who formed the Ist international?
74981. Which o the following statements is not true about the National Commission for woman?
74982. Who is known as the ‘Babur of British India’?
74983. In a camera we use a?
74984. A torsional system with discs of moment of inertia I1 and I2 as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to
74985. A spring controlled governor is said to be isochronous when the controlling force
74986. In a steam engine, one method of obtaining the earlier cut-off with a simple slide valve is by increasing the angle of advance of the eccentric while the throw of the eccentric, steam lap and exhaust lap are kept constant. This method will
74987. The equation of motion for a vibrating system with viscous damping is
,
if the roots of the equation are complex conjugate, then the system will be critically damped.
74988. The critical speed of a shaft depends upon its
74989. Which of the following mechanism is an approximate straight line motion mechanism?
74990. A shaft carrying two rotors at its ends will have
74991. When a mass of a critically damped single degree of freedom system is deflected from its equilibrium position and released, then it will
74992. The friction experienced by a body, when at rest, is known as static friction.
74993. When the particles of a body moves perpendicular to its axis, then the body is said to have
74994. A sliding pair has a completely constrained motion.
74995. Power of a governor is the
74996. The power from the engine to the rear axle of an automobile is transmitted by means of
74997. A flywheel is used to control the mean speed of an engine caused by the variations in load.
74998. A slider moves at a velocity v on a link revolving at ω rad/s. The coriolis component of acceleration is
74999. The effort of a Porter governor is equal to (where c = Percentage increase in speed, m = Mass of ball, and M = Mass on the sleeve)
75000. In a reciprocating steam engine, which of the following forms a kinematic link?