更多"Which conditions will normally caus"的相关试题:
[单项选择]The three conditions which cause engine shutdown are overspeed,low lube oil pressure,and().
A. High lube oil pressure
B. High jacket water pressure
C. High jacket water temperature
D. Low jacket water pressure
[单项选择]The total magnetic effects which cause deviation of a vessel’s compass can be broken down into a series of components which are referred to as().
A. divisional parts
B. coefficients
C. fractional parts
D. equations
[单项选择]Which cause of following will not lead to refrigeration plant short-cycle?()
A. lack of refrigerant
B. refrigerant with much water
C. set defectively low pressure relay
D. no cooling water
[单项选择]Which cause of the following can lead to the engine not to start on air?()
A. starting air pressure too high
B. correct timing of starting air valves
C. three of the starting valves stuck
D. the turning gear disengaged
[单项选择]Which will cause the high pressure cutout to stop the compressor in a R-22 system?()
A. Condenser leakage
B. A shortage of liquid refrigerant
C. Excessive frost on the evaporator
D. Not enough condenser cooling water
[单项选择]Which of the terms listed below represents the operational speed at which excessive engine vibration is created?()
A. Non-harmonic speed
B. Critical speed
C. Maximum speed
D. Design maximum speed
[单项选择]Which of the conditions listed may occur in an operating diesel engine if air pockets form within the cylinder head circulating water passages? ()
A. Hydraulic stress and distortion will develop
B. Hot spots will develop
C. Fuel oil viscosity will increased
D. An increase in trapped deposits of scale and dirt
[单项选择]Which will cause a wire rope to fail().
A. Using a medium graphite grease as a lubricant
B. Operating a winch too slow
C. Using a sheave with an undersized throat
D. A sheave diameter of 24 times the wire's diameter
[单项选择]Which operation may cause the pressure in an inert tank to fall below the prescribed limits().
A. Loading
B. Discharging
C. Crude oil washing
D. Steaming tanks
[单项选择]
Which of the following may cause that excessively warm water leaves the condenser in a refrigeration plant? ()
(1) too little cooling water
(2) too much cooling water
(3) too warm cooler water
A. (1)only
B. anyof(1),(2)and(3)
C. anyof(1)and(3)
D. anyof(1)and(2)
[单项选择]Which protocol can cause overload on a CPU of a managed device?()
A. Netflow
B. WCCP
C. IP SLA
D. SNMP
[单项选择]Which of the following conditions would cause carbon deposits to form in the piston ring belt of a diesel engine?()
A. faulty combustion
B. excessive ring temperature
C. over lubrication
D. all of the above
[单项选择]Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle turbo-charged diesel engine?()
A. Clogged air intake falters
B. Piston blow-by
C. A defective after-cooler
D. Faulty exhaust valves
[单项选择]Which of the following conditions can cause below normal air pressure in the intake manifold of a turbocharged diesel engine?()
A. Excessive piston blow-by to the manifold
B. Insufficient cooling water flow
C. Accumulated water in the air boxes
D. Clogged air intake filters
[单项选择]Which of the following conditions could cause the feed pump for an auxiliary boiler to lose suction?()
A. Increased suction head pressure
B. Decreased feedwater temperature
C. Pump recirculating line being open too much
D. Excessive feedwater temperature
[单项选择]Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?()
A. Defective temperature controls in the system
B. Cavitation in the cooling water pump
C. Opened vent in the cooling system
D. Restricted water passages in the engine
[单项选择]Which of the conditions listed would cause simultaneous high cylinder firing pressure and low exhaust temperature?()
A. Improper fuel rack positioning
B. Lengthy opening of the exhaust valve
C. Excessively early injection timing
D. Extended light load operation
[单项选择]Which of the following conditions can cause excessive lube oil consumption in a diesel engine?()
A. Low lube oil temperature
B. Dirty lube oil strainer
C. Low lube oil pressure
D. High lube oil temperature
[单项选择]
Which of the following may cause that the compressor cuts off on high pressure cutout in a refrigeration plant? ()
(1) faulty condensing
(2) too few refrigerant
(3) high discharge pressure
A. any of (1) and (3)
B. any of (1) and (2)
C. any of (2) and (3)
D. any of (1), (2) and (3)