题目内容

Cylinder has a bore area of 300 cm2 and velocity of 180 cm/min. Calculate the flow rate of a pump

A. 55 l/min
B. 50 l/min
C. 54 l/min
D. none of the above

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Which energy is converted into mechanical energy by the hydraulic cylinders?

A. hydrostatic energy
B. hydrodynamic energy
C. electrical energy
D. none of the above

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In a telescopic cylinder, as the number of stages increase ()

A. diameter of piston rod also increases
B. diameter of piston rod decreases
C. diameter of the piston rod remains the same
D. none of the above

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Which of the following statements is true for standard hydraulic cylinder and a telescopic cylinder?

A. telescopic and standard cylinders give same stroke length
B. telescopic cylinders give lesser stroke length than standard cylinder
C. telescopic cylinders give greater stroke length than standard cylinder
D. none of the above

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A cylinder displaces a 14 kN load at 0.85 m/s. If hydraulic fluid enters the cylinder at a rate of 45 mL/min and at a pressure of 40 MPa, what is the total efficiency of the system?()

A. 22%
B. 40%
C. 35%
D. 63%

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Cylinder has a bore area of 300 cm2 and velocity of 180 cm/min. Calculate the flow rate of a pump

A. 55 l/min B. 50 l/min C. 54 l/min D. none of the above

Which energy is converted into mechanical energy by the hydraulic cylinders?

In a telescopic cylinder, as the number of stages increase ()

Which of the following statements is true for standard hydraulic cylinder and a telescopic cylinder?

A cylinder displaces a 14 kN load at 0.85 m/s. If hydraulic fluid enters the cylinder at a rate of 45 mL/min and at a pressure of 40 MPa, what is the total efficiency of the system?()

A. 55 l/min
B. 50 l/min
C. 54 l/min
D. none of the above