题目内容

The relationship between a. pressure loss and b. unloading pressure of pilot relief valve should be ()

A. a>b
B. a=b
C. a D. uncertain

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If the damping orifice of pilot-operated pressure relief valve is blocked, what would happen?

A. There is no overflow
B. The inlet pressure of the valve is infinite
C. The inlet pressure ov the valve increases with the increase of load
D. The inlet pressure cannot be adjusted

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If the remote control port of pilot-operaed pressure relief valve is connected to the tank, what could happen? ()

A. There is no overflow
B. The inlet pressure is infinite
C. The inlet pressure increases with the increase of load
D. The inlet pressure cannot be adjusted

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If the oil return port of spring chamber of pilot-operated pressure reducing valve is blocked, what would happen? ()

A. The pressure can not be adjusted high
B. The pressure is infinite
C. The pressure regulating handle can't be turned
D. The pressure regulating handle turns easily.

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When the inlet pressure of the pressure reducing valve is basically constant, if the flow rate increases, the outlet pressure ().

A. increase
B. constant
C. decrease
D. is uncertain

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The relationship between a. pressure loss and b. unloading pressure of pilot relief valve should be ()

A. a>b B. a=b C. a D. uncertain

If the damping orifice of pilot-operated pressure relief valve is blocked, what would happen?

If the remote control port of pilot-operaed pressure relief valve is connected to the tank, what could happen? ()

If the oil return port of spring chamber of pilot-operated pressure reducing valve is blocked, what would happen? ()

When the inlet pressure of the pressure reducing valve is basically constant, if the flow rate increases, the outlet pressure ().

A. a>b
B. a=b
C. a D. uncertain