Q. Two pulleys of radii r1 and r2 and at distance x apart are connected by means of a cross belt drive. The length of the belt is

View solution

Q. 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 longitudinal vibration is equal to

View solution

Q. The ratio of velocities of the shafts connected by Hooke's joint is given by (where N and N1 = Speed of driving and driven shafts (in r.p.m.) respectively, θ = Angle through which the arms of the cross turn, and α = Angle of inclination between the two shafts)

View solution

Q. In under damped vibrating system, if x1 and x2 are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to

View solution

Q. For a twin cylinder V-engine, the crank positions for primary reverse cranks and secondary direct cranks are shown in the below figure. The engine is a

View solution

Q. A rotor supported at A and B carries two masses as shown in the below figure. The rotor is

View solution

Q. In the two rotor system as shown in the below figure (I1 < I2), a node of vibration is situated

View solution

Q. In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral C Q NO, the acceleration of the piston is zero when the crank OC and connecting rod PC are at right angles to each other.

View solution

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

View solution

Q. In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral C Q NO, if N coincides with O, then

View solution

Q. In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral C Q NO. The acceleration of the piston P with respect to the crankpin C is given by

View solution

Q. 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.

View solution

Q. 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

View solution

Q. 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

View solution