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Friday 9 August 2013

GENERAL AUGUST ONLINE - 1

general- august 2013!!!!

84. The static suction head of a pump is the
A. distance of the suction liquid level above the center line of the pump
B. distance the suction liquid level is below the center line of the pump
C. force necessary to overcome frictional losses in the pump and piping
D. amount in inches of mercury the total suction head is below atmospheric pressure

86.Salinity of distilled water produced from fresh water generator onboard depends on

A. Amount of feed set in fresh water production
B. Amount of salt water leaking from condenser if any
C. Temperature of the sea water used
D. Efficiency of brine ejector from the evaporator shell

96.The pumps performance depends upon

A. Clearance between the wear ring and the impeller
B. Clearance between the impeller and the casing
C. Clearance between impeller and shaft
D. Clearance between mechanical seal and shaft 

132.The coating on a electrode used for electric arc welding _________________

A. creates a gas shield to prevent oxidation of the weld material

B. helps the weld formation by shaping the metal transfer 

C. provides an electrical insulation for the user 

D. All of the above
133.A diffuser is provided at the end of a mechanical atomizer in boiler onboard

A.To prevent blow back of the flame 

B.To mix the air and fuel properly

C.To prevent blow out of the flame

D.To eject the excess fumes from the atomizer

136.If the watchkeeping engineer encounters a Main Engine Slow down alarm he should____________________

A.Immediately cancel the slow down in the control panel

B.If navigation circumstances permit, after consulting chief engineer he should tell bridge to stop engine ,investigate the fault ,rectify it in consultation with senior engineers and then prepare for restarting the engine

C.He should raise engineer's alarm and wait for all engineers to reach the engine room

D.He need not take any action and wait for the alarm to resolve on its own and then cancel the slow down
138. Sequential starting of machineries after black out in engine room is necessary

A.To prevent overload of Generators

B. To quickly restore the failed power supply in order

C. To prevent damage to machinery which has been switched off

D. All of the above

140. Salinity of distilled water produced from fresh water generator onboard depends on 

A.Amount of feed set in fresh water production

B.Amount of salt water leaking from condenser if any

C.Temperature of the sea water used

D.Efficiency of brine ejector from the evaporator shell

176.How is the water circulated between water and steam drums in a water tube D- type boiler?
A.By the boiler feed water pump
B.By a circulating pump outside the boiler 
C.Due to difference in densities of water and steam 
D.None of the above

183.Water carryover from boiler onboard through the steam causes
A. Erosion of the steam plant machinery
B. Low water level inside the boiler
C. Build-up of deposits on the steam plant machinery
D. None of the above


*188.Which of the following types of coatings used in tanks of a
chemical carrier provides a comprehensive protection against
most solvents?
A. Epoxy coatings
B. Polyurethane coatings
C. Zinc silicate
D. Phenolic resins

189.Dezincification of brasses may be prevented by introducing
which of the following additives during manufacturing brass?
A. 0.04% Nickel
B. 0.04% Cobalt
C. 0.04%Arsenic
D. 0.04%Tungsten


190.Which of the following statements is false about corrosion due to Galvanic action?
A. Metals close to the anodic end of galvanic series corrode in preference to the ones close to the cathodic end.
B. When any single metal exists in a system, it cannot corrode due to Galvanic action.
C. Zinc is anodic to steel and is often used as a protective coating
D. Corrosion rate is affected by temperature

192.Steam stop valve is eased of its seat during boiler start up
from cold
A. To allow thermal expansion of parts
B. To allow steam flow during start up
C. To prevent water hammer
D. All of the above

* 194.Old machinery space log book are kept in safe custody
A. To refer and clarify in case of any query
B. For purpose of internal and external audits
C. To safeguard the chief engineer???s competence
D. None of the Above


196.Before the longitudinal carriage feed of a lathe is
engaged, you must be certain the
A. spindle clutch is disengaged
B. carriage clamp screw is loosened
C. carriage stop clamp is tightened
D. thread dial indicator is zeroed
*197.A record of the types and strengths of steels used on a
MODU must be included in the
A. General plans
B. Builder's documentation
C. Certificate of Inspection
D. Construction portfolio
198.Moisture in a refrigerant system will cause
A. Faulty expansion valve
B. High suction temperature
C. High suction pressure
D. Low discharge temperature

*199.The term referring to the number of teeth per inch on a
hacksaw blade is known as the
A. Set
B. rake
C. pitch
D. thread gauge

200.If the superheat value of a thermostatic expansion valve is
set too low________
A. The suction line of the compressor will be too hot
B. The suction line of the compressor will be too cold
C. The discharge line of the compressor will be too hot
D. The discharge line of the compressor will be too cold

*202.Preferential tripping of electrical machineries prevents
A. Overloading of generators
B. Black out in engine room
C. Allows starting of large machineries
D. None of the above

*203.A simultaneous rise in stern tube forward seal tank and drop
in level of header tank indicates_________________
A. Aft seal ring of forward seal assembly damaged or
sealing disturbed by foreign object
B. Forward seal ring of forward seal assembly damaged or
sealing disturbed by foreign object.
C. Either of the above
D. None of the above

206.High pressure cut out of a refrigerant system can activate
due to which of the following faults?
A. Improper cooling due to a dirty condenser
B. Overcharge
C. Air in the system
D. All of the above


211.A high pressure differential in a main engine fuel oil
filter onboard can be best reduced by
A. Back flushing the filter manually
B. Stopping the main engine to change the filter element
C. Changing over to stand by filter if provided
D. None of the above

 212.A major controlling factor in the location of the condensate

return piping from a heating system is/are
A. the requirement for a gravity return
B. the requirement for short laterals run
C. the requirement to minimize conflict with headroom and
other services
D. all of the above

213.Which of the following is the material used for
manufacturing tube plates of a shell and tube type heat
exchanger?
A. Cupro-nickel
B. Aluminum Brass
C. Admiralty Brass
D. Gunmetal
*214.Plate type heat exchangers are preferred over shell and tube
type ones because____________
A. They can be cleaned more thoroughly .
B. Their capacity can be altered by adding or removing plates.
C. Turbulent flow and more margin for increased fluid
velocity ensures less deposits and hence longer time interval between cleanings.
D. All of the above
215.Inert Gas System should be capable of delivering Inert Gas
at the rate of at least____________________________
A. 110% of the maximum rate of cargo discharge capacity of
the ship
B. 133.33% of the maximum rate of cargo discharge capacity
of the ship
C. 125% of the maximum rate of cargo discharge capacity of
the ship
D. 90% of the maximum rate of cargo discharge capacity of
the ship

*216.Which of the following is an example of non-destructive
test?
A. Creep test
B. Impact test
C. Hardness test
D. Ultrasonic testing

218.Frequent cutting- in & cutting -out of a fresh water pump on
a hydrophore system indicates which of the following?
A. Nothing abnormal
B. Excessive air charge
C. Insufficient air charge
D. The differential setting between cut-in and cut out is
too low

*219.overall length of pairs of rams is reduced in which of the
following tiller designs of a steering gear arrangement?
A. Forked tiller design
B. Round arm tiller design
C. Conventional tiller design
D. None of the above


224.In case of failure of the control system of a centrifuge,the
correct sequence for manually desludging a purifier would be-
A. Stop feed-give sealing water-close sealing water -shut
operating water-open and close desludging water quickly
B. Stop feed- shut operating water-open and close
desludging water quickly
C. Shut operating water-stop feed- open sealing water for a
short time then close-open and close desludging water
quickly
D. Shut operating water- stop feed- open and close
desludging water quickly

225.Prior to man entry into an empty cargo tank of an LNG
carrier, what should be the first operational procedure
adopted?
A. Purging
B. Aerating
C. Inerting
D. Warming

*226.Prior to major overhaul of main engine onboard, the engine
room crane is tested by
A. Operating the crane through the normal range
B. Testing of the crane with two sample ???abnormal???
conditions
C. Inspection of the crane hook and other safety
arrangements
D. Stress testing of crane wire with peak loads

*227.Scale formation in a fresh water generator evaporator can
lead to ____________________
A. Impaired heat transfer
B. Reduced capacity
C. Increased shell temperature
D. All of the above

*228.Salinity of distilled water produced from fresh water
generator onboard depends on
A. Amount of feed set in fresh water production
B. Amount of salt water leaking from condenser if any
C. Temperature of the sea water used
D. Efficiency of brine ejector from the evaporator shell


229.Pipe threads are cut with a taper to
A. prevent overtightening the joint
B. provide a leakproof fit
C. permit easy joint disassembly
D. produce a fine even thread

233.Enlarging one tube end so the end of another tube of the same size will fit inside is termed
A.Belling
B.Stretching
C.Flaring
D.Swaging

234.To prevent electric shock during electric arc welding
A.Wear dry clothes
B.Wear insulated shoes
       C.Keep first aid equipment ready
D.None of the above

239.Principle of fire fighting onboard is
A.Watering of fire
B.Starving of fire
C.Cooling of fire
D.Smothering of fire

248.In case of an exhaust gas boiler fire , which of the following is a suitable control measure?
A. Start frequent soot blowing
B. Increase main engine speed to blow away the soot particles on fire
C. Stop cooling water circulation to avoid leakage
D. None of the above

281.On tanker In IG system, ………(some text missing)…… IG released to (i) High Velocity vent (ii) Mast Riser 
A. Only (i)
B. Only (ii)
C. Both I and II (ans)
D. Neither (i) or (ii)
283.Which of the following is the function of steam drum in two drum boiler:
1. collect steam
2. equalise water in boiler tubes
3. collect boiler water
4. precipitates salts out of boiler water



If the superheat value of a thermostatic expansion valve is set too low________
A. The suction line of the compressor will be too hot
B. The suction line of the compressor will be too cold (ans)
C. The discharge line of the compressor will be too hot
D. The discharge line of the compressor will be too cold


A simultaneous rise in stern tube forward seal tank and drop in level of header tank indicates_________________
A. Aft seal ring of forward seal assembly damaged or sealing disturbed by foreign object (ans)
B. Forward seal ring of forward seal assembly damaged or sealing disturbed by foreign object.
C. Either of the above
D. None of the above

High pressure cut out of a refrigerant system can activate due to which of the following faults?
A. Improper cooling due to a dirty condenser
B. Overcharge
C. Air in the system
D. All of the above

Which of the following is the function of steam drum in two drum boiler:
1. collect steam
2. equalise water in boiler tubes
3. collect boiler water
4. precipitates salts out of boiler water
 
WHICH OF THE PUMPS WHEN ATTACHD TO A CONSTANT SPEED MOTOR WILL NOT BE ABLE TO ACT AS A VARIABLE DEL. PUMP
-AXIAL PISTON PP
-RADIAL PISTON PP
-GEAR PP
-NONE OF THE ABOVE

HYDRATES FORMATION IN CARGO TANKS OF A GAS CARRIER WUD LEAD TO???
WHY IS SALINOMETER COCK PROVIDED?
WHAT ARE THE INDICATIONS OF POOR PERFORMANCE OF ME AIRCOOLER-ANS DECREASE IN TEMP DIFF OF THE COOLING WATER INLET AND OUTLET TEMPERATURE
FUNCTION OF WEAR RING?


IN A DUAL PRESSURE . BOILER THE PRESSURE IN THE SECONDARY DRUM IS.................THAN THAT IN THE PRIMARY DRUM
-LOWER
-HIGHER
-SAME
-TWICE

U CAN THROW OUT DUNNAGE N FLOATING PACKAGE INTO SEA HOW MANY MILES FROM THE COAST??
12
25
50
5

IF ALL BLR. WATER LEVEL GUAGE GLASS SHOW NO WATER..ACTION??
-STOP BOILR N INSPECT
-START STANDBY FEED PUM
-START MANUAL FILLING
-all of the above

regulations for emg fire pump??

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