超星 - Chapter_4_Actuators - 查题吧

单选题

The swing cylinder transmits ().

A. force
B. torque;
C. curvilinear motion.
D. friction

单选题

The running speed of hydraulic cylinder mainly depends on: ()

A. seal of hydraulic cylinder
B. input flow rate
C. pump supply pressure
D. external load

单选题

When the differential connection of the hydraulic cylinder is working, the cylinder's ().

A. speed increases
B. pressure increases
C. speed decreases
D. pressure decreases

单选题

When the effective area of the piston of the hydraulic cylinder is fixed, the movement speed of the piston depends on ().

A. pressure of oil in hydraulic cylinder
B. load resistance
C. flow rate into hydraulic cylinder
D. output flow of hydraulic pump

单选题

Which cylinder should be chose to achieve differential connection? ()

A. plunger type hydraulic cylinder
B. swing hydraulic cylinder
C. single rod hydraulic cylinder
D. double rod hydraulic cylinder

单选题

The type of hydraulic cylinder often used for long cylinder is ().

A. piston type
B. plunger type
C. swing type
D. rod less hydraulic cylinder

单选题

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

单选题

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

单选题

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

单选题

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

2