If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?()
- ACentrifugal
- BGear
- CPropeller
- DTurbine
If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?()
1、If the compensating needle valve of a
If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will ()Ahave a larger than normal dead b...
2、When the starting air valve closes on
When the starting air valve closes on one cylinder, another starting air valve has () opened on another cylinder whose piston has just commenced its downward stroke.AjustBnearlyCmerelyDalready
3、The valve on the discharge side of a c
The valve on the discharge side of a cargo pump on a tanker will usually be a().Abutterfly valveBspectacle valveCcheck valveDglobe valve
4、If you were inspecting the valve sprin
If you were inspecting the valve springs on an auxiliary diesel engine, your best indication of impending spring failure would be ()Aa glazed...
5、The valve on the discharge side of a c
The valve on the discharge side of a cargo pump on a tank vessel will usually be a().Abutterfly valveBspectacle valveCcheck valveDglobe valve
6、If the discharge valves on a refrigera
If the discharge valves on a refrigeration compressor are leaking badly, the compressor should ().Arun continuouslyBnot startChave high discharge pressureDshort cycle on the high pressure switch