更多"Increasing the valve clearance betw"的相关试题:
[单项选择]Reducing the clearance between a valve stem and rocker arm will result in the valve （）
A. having a shorter duration of opening
B. having a longer duration of opening
C. closing sooner
D. opening later
[单项选择]If you increase the clearance between a valve stem and rocker arm, which of the listed condition will occur?（）
A. valve will open later
B. valves will close later
C. amount of fuel injected will be increased
D. amount of fuel injected will be decreased
[单项选择]If clearance between a piston and the cylinder wall is excessive, piston slap will occurThe slap itself is caused by （）
A. alternation of side thrust
B. a breakdown of the lube oil film on the cylinder wall
C. worn piston boss piston pin bearings
D. fluctuating gas pressure in the combustion space
[单项选择]Icreasing the exhaust valve tappet clearance of a diesel engine will result in the exhaust valve opening （）
A. later and closing earlier
B. later and closing later
C. earlier and closing earlier
D. earlier and closing later
[单项选择]Valve lash, or clearance refers to the （）
A. clearance between the top of the valve stem and the rocker arm
B. compression of the valve springs
C. clearance between the valve seat inserts and the head
D. out of roundness of the fuel injection cams
[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]Insufficient end clearance on newly fitted piston rings in a diesel enginewill cause the rings to（）
A. jam in the most worn part of the cylinder when the rings expand
B. break in the most worn part of the cylinder when the rings expand
C. wear eccentrically on the side opposite the end gap
D. overheat and jam at the top center on the combustion stroke
[单项选择]Clearance gauges at bridges indicate （）.
A. the height of the tide
B. depth of water under the bridge
C. charted vertical clearance at mean low water
D. distance from the water to low steel of the bridge
[单项选择]The clearance volume for a single stage compressor is defined as the space created between the （）.
A. top of the piston and bottom side of head, with the piston at BDC
B. piston and head, including the space around the piston to the top of the upper ring and under the valves, with the piston at TDC
C. bottom of the piston and bottom side of the head at TDC, regardless of upper ring location and valve placement
D. top of the piston and bottom side of the head at TDC as compared to that which exists between the top of the piston and bottom side of head at BDC
[单项选择]Clearance volume scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished （）.
A. during the valve overlap period
B. with only the exhaust valve open
C. at a pressure below atmospheric
D. without cooling the cylinders or pistons
[单项选择]A vessel engaged in mine clearance operations is called（）.
A. a vessel restricted in her ability to maneuver
B. a vessel not under command
C. a vessel constrained by her draught
D. a vessel not under way
[单项选择]To determine the main bearing clearance of a propulsion diesel engine, you should measure the main bearing shell using a ball anvil outside micrometer and measure the crankshaft journal using a/an （）
A. telescoping
B. ring ‘snap’ gauge
C. inside vernier caliper
D. outside micrometer
[单项选择]During check on top clearance in main bearings, turn the crankthrow for the relevant cylinder unit to （） and stop the lube oil circulating pump.
A. port side
B. starboard side
C. BDC position
D. DC position
[单项选择]If the back clearance of a piston ring is excessive,（）
A. compression pressure in the cylinder will be higher
B. carbon will accumulate behind the ring
C. combustion gases will penetrate beneath the ring land
D. piston side thrust will be increased
[多项选择]A Catalyst 2950 needs to be reconfigured. What steps will ensure that the old configuration is erased?（）
A. Erase flash.
B. Restart the switch.
C. Delete the VLAN database.
D. Erase the running configuration.
E. Erase the startup configuration.
F. Modify the configuration register.
[单项选择]In a large, low-speed diesel engine the clearance between the piston crown and cylinder head is found to be excessiveIn order to correct for this, you should（）
A. build up the piston crown by metal spraying
B. build up the cylinder head by metal spraying
C. insert shims between the crankpin bearing box and the connecting rod foot
D. install a thinner head gasket
[单项选择]Increasing differential pressure of an oil filter indicates that （）
A. it is dirty
B. it is leaky
C. it has been renewed
D. all the above
[单项选择]A more sophisticated pressure reducing valve incorporates a pilot valve which controls the fluid above the valve operating piston in response to downstream pressureThe bold and italic word “which” means （）.
A. a pressure reducing valve
B. a pilot valve
C. an operating piston
D. downstream pressure
