Q1- A pressure-relief valve contains a poppet with an area of 5 cm2 on which the system pressure acts. During assembly, a spring with a spring constant of 3700 N/cm is installed in the valve to hold the poppet against its seat. The adjustment mechanism is then set so that the spring is initially compressed to 0.45 cm from its free-length condition. In order to pass full pump flow through the valve at the pressure-relief valve pressure setting, the poppet must move 0.25 cm. ( A ) The cracking pressure of the valve
Q1- A pressure-relief valve contains a poppet with an area of 5 cm2 on which the system pressure acts. During assembly, a spring with a spring constant of 3700 N/cm is installed in the valve to hold the poppet against its seat. The adjustment mechanism is then set so that the spring is initially compressed to 0.45 cm from its free-length condition. In order to pass full pump flow through the valve at the pressure-relief valve pressure setting, the poppet must move 0.25 cm. ( A ) The cracking pressure of the valve
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:Q1- A pressure-relief valve
contains a poppet with an area
of 5 cm2 on which the system
pressure acts. During assembly,
a spring with a spring constant
of 3700 N/cm is installed in the
valve to hold the poppet against
its seat. The adjustment
mechanism is then set so that
the spring is initially compressed
to 0.45 cm from its free-length
condition. In order to pass full
pump flow through the valve at
the pressure-relief valve
pressure setting, the poppet
must move 0.25 cm. ( A) The
cracking pressure of the valve
will be *
O 4.62 MPa
3.33 MPa
6.45 MPa
O None of the above
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