Flexible hose under pressure in a hydraulic system will ().
- Atend to twist about its long axis
- Bexpand in length and in diameter
- Ccontract in length and expand in diameter
- Dflex at right angles to the applied pressure
Flexible hose under pressure in a hydraulic system will ().
1、If the firing pressures in a diesel en
If the firing pressures in a diesel engine are high, although the exhaust temperatures are normal, the cause may be()Aearly injection timingBw...
2、() are used to limit the pressure in a
() are used to limit the pressure in any particular portion and mainly control the pressure after the valve.ARelief valvesBCheck valvesCSafety valvesDReducing valve
3、A pressure drop in the liquid line of
A pressure drop in the liquid line of a refrigeration system may cause()Athe solenoid valve to seizeBthe compressor to huntCflash gas to form in the liquid lineDthe expansion valve to freeze ope
4、The highest pressure in a diesel engin
The highest pressure in a diesel engine cylinder normally occurs ().Aat TDCBbefore TDCCafter TDCDduring air starting
5、Low compression pressure in a diesel e
Low compression pressure in a diesel engine may be the result of ()Ainsufficient fuel supply due to fuel pump valves sticking or leakingBexce...
6、A decrease in barometric pressure is a
A decrease in barometric pressure is associated with all of the following except().Arising warm airBproximity to a low pressure areaCinward spiraling circulationDclear dry weather