The efficiency of a hydraulic press is given by (where W = Weight lift – McqOptions

MCQOPTIONS

1.	The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)
A.	(W/p) × (A/a)
B.	(p/W) × (a/A)
C.	(W/p) × (a/A)
D.	(p/W) × (A/a)
Answer» D. (p/W) × (A/a)

Discussion

No Comment Found

Related MCQs

Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in metres, and Hd = Delivery head in metres)
The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H))
A ship with jet propulsion draws water through inlet orifices at right angles to the direction of its motion. The propelling force of the jet is (where a = Area of the jet, Vr = Relative velocity of the jet and ship = V + v, v = Velocity of the ship, and V = Velocity of the jet issuing from the ship)
The force exerted (in newton) by a jetof water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m2, and V = Velocity of jet in m/s)
The hydraulic efficiency of an impulse turbine is the
The specific speed of a hydraulic turbine depends upon
In an impulse turbine, the pressure of water both at entering and leaving the vanes, is atmospheric.
The specific speed of a turbine is given by the equation
The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which
The relation between hydraulic efficiency (ηh), mechanical efficiency (ηm) and overall efficiency (ηo) ) is