更多"If the relief valve on the discharg"的相关试题:
[单项选择]The relief valve is located on the（）
A. discharge side of condenser
B. discharge side of compressor
C. outlet of the evaporator
D. receiver tank
[单项选择]When the relief valve opens it discharges high pressure refrigerant vapor to the （）.
A. liquid strainer
B. refrigerant inlet of the condenser
C. inlet side of the evaporator
D. suction side of the compressor
[单项选择]If a single cylinder relief valve on a diesel engine lists frequently while the engine is running, the cause may be an （）
A. excessively late injection timing for each cylinder
B. incorrectly adjusted intake valve timing
C. incorrectly adjusted fuel injector
D. incorrectly adjusted intake valve clearance
[单项选择]A relief valve for a cargo pump is generally installed（）.
A. after the discharge valve
B. between the pump and discharge valve
C. after the suction valve
D. between the pump and suction valve
[单项选择]If the relief valve on a diesel engine cylinder lifts, the cause could be due to （）
A. liquid in the cylinder
B. low compression in the cylinder
C. high exhaust temperature
D. poor fuel penetration
[单项选择]If a single cylinder relief valve on a main propulsion diesel engine begins to lift, but it is not possible to secure the engine, which of the following actions should be taken?（）
A. Increase the cooling water flow to the engine
B. Secure or reduce fuel to that cylinder
C. Screw down on the pressure adjusting spring to decrease to decrease popping pressure
D. Readjust the injection timing
[单项选择]What is the purpose of a relief valve?（）
A. to fill 2 tanks at the same time
B. to use pump at a higher pressure
C. to return liquid to suction side if discharge valve is closed
D. All of the above are true
[单项选择]The valve on the discharge side of a cargo pump on a tank vessel will usually be a（）.
A. butterfly valve
B. spectacle valve
C. check valve
D. globe valve
[单项选择]If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?（）
A. Centrifugal
B. Gear
C. Propeller
D. Turbine
[单项选择]In （） pumps a closed discharge valve will cause bursting discharge pressure.
A. centrifugal
B. plunger
C. injector
D. water
[单项选择]In （） pump a closed discharge valve will not cause excessive pressure to build up.
A. gear
B. vane
C. screw
D. centrifugal
[单项选择]The discharge side of every fire pump must be equipped with a（）.
A. gate valve
B. pressure gauge
C. check valve
D. strainer
[单项选择]Increasing the valve clearance between a valve stem and rocker arm, will result in the valve （）
A. closing later
B. opening sooner
C. staying open for a shorter period of time
D. staying open for a longer period of time
[单项选择]The needle valve in a fuel valve will （） when the fuel pressure action on the needle valve tapered face exerts a force lower than that of the spring compression.
A. be jammed
B. be opened
C. be seated
D. be broken
[单项选择]Badly leaking refrigeration compressor discharge valves will cause（）.
A. overfeeding of the expansion valve
B. damage to the condenser
C. constant running of the compressor
D. flooding of the receiver
[单项选择]The discharge from a carbon dioxide fire extinguisher should be directed（）.
A. at the base of the flames
B. at the center of the flames
C. to the lee side of the flames
D. over the tops of the flames
[单项选择]You intend to discharge medical or hazardous wastes ashore MARPOL annex V requires you to notify a receiving port or terminal in advance.How much advance notice require?（）
A. 12 hours
B. 24 hours
C. 48 hours
D. Advance notification is not required
[单项选择]If the discharge valves on a refrigeration compressor are leaking badly, the compressor should （）.
A. run continuously
B. not start
C. have high discharge pressure
D. short cycle on the high pressure switch
