Minimise the effect of primary forces

Minimise the effect of secondary forces

Have perfect balancing

To start the locomotive quickly

**In a reciprocating steam engine, when the crank has turned from inner dead centre through an angle θ,…****If the opposite links of a four bar linkage are equal, the links will always form a****The primary unbalanced force is maximum when the angle of inclination of the crank with the line of…****The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity…****In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is Constant, then****With single Hooke's joint it is possible to connect two shafts, the axes of which have an angular misalignment…****The lower pairs are __________ pairs.****The equivalent length of a simple pendulum which gives the same frequency as a compound pendulum is****The frictional torque transmitted by a cone clutch is same as that of****Higher pairs are those which have****The motion between a pair which takes place in __________ is known as incompletely constrained motion.****Transmission angle is the angle between****Which of the following is an inversion of a single slider crank chain?****The Klein's diagram is used when****Maximum fluctuation of energy in a flywheel is equal to [where I = Mass moment of inertia of the flywheel,…****An eccentric sheave pivoted at one point rotates and transmits oscillatory motion to a link whose one…****The critical speed of a shaft in revolution per second is __________ as that of natural frequency of…****The natural frequency of free longitudinal vibrations is equal to (where m = Mass of the body, s = Stiffness…****In a simple harmonic motion, the velocity vector with respect to displacement vector****Efficiency of a screw jack is given by****The arrangement is called bevel gearing, when two __________ are connected by gears.****Which of the following property of the instantaneous centre is correct?****The secondary unbalanced force is __________ the primary unbalanced force.****In gramophones for adjusting the speed of the turntable, the following type of governor is commonly…****The coefficient of fluctuation of speed is __________ of maximum fluctuation of speed and the mean speed.****The height of a Watt's governor (in metres) is equal to (where N = Speed of the arm and ball about the…****A foot step bearing and rotor of a vertical turbine form examples of****The pressure angle of a cam is the angle between the direction of the follower motion and a normal to…****The included angle for the V-belt is usually****The Coriolis component of acceleration acts**