Domestic water pump is started automatically by () which operates as the water level falls to a predetermined level.
- Aa level controller
- Ba temperature switch
- Ca pressure switch
- Da floating ball
Domestic water pump is started automatically by () which operates as the water level falls to a predetermined level.
1、In a domestic fresh water system, the
In a domestic fresh water system, the pump starters are controlled by () switches which operate when the pressure in the tank varies within predetermined limits as water is drawn off.Awater levelBwater flowCtemperatureDpressure
2、The starting air bottle should be pump
The starting air bottle should be pumped up to maximum pressure by the () before start of the engine.Aair compressorBrefrigeration compressorCvacuum pumpDpurifier
3、Cooling water pumps driven by direct r
Cooling water pumps driven by direct reversing diesel engines are usually of the straight impeller vane type pump with a concentric housing to...
4、When starting a reciprocating pump, th
When starting a reciprocating pump, the inlet valve should be ().AclosedBopened fullyCcracked openDpartly ope
5、The motor for the fresh water pump ().
The motor for the fresh water pump ().Aneed to repairBneed to be repairedCneeds to repairDneeds repairing
6、Pump up the starting air reservoirs to
Pump up the starting air reservoirs to their maximum pressure and ()the air reservoirs and air system.AopenBcloseCdrainDvent