Engineering MCQs

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

by
acceleration and velocity of the piston P is zero
acceleration and velocity of the piston P is maximum
acceleration of the piston P is zero and its velocity is maximum
acceleration of the pi
✅ The correct answer is option C.

The discharge over a rectangular weir, considering the velocity of approach, is (where H1 = Total height of water above the weir = H + Ha H = Height of water, over the crest of the weir, and Ha = Height of water, due to velocity of approach)

by
Cd x L2g [H1 – Ha]
Cd x L2g [H13/2 – Ha3/2]
Cd x L2g [H12 – Ha2]
Cd x L2g [H15/2 – Ha5
✅ The correct answer is option B.