MEO class IV e pariksha online questions for MEK General Paper

1) When there is excessive ingress of water in the engine room onboard causing dangerous levels of bilge water,
A.Start oily water separator and pump overboard
B.Start General service pump and pump bilges overboard
C.Use bilge injection valve and pump bilges overboard
D.None of the above


2) The by-products of oxidation, as a result of water contamination of hydraulic oil, are generally
A.removed by cellulose type filters
B.gums, varnishes, and acids
C.always neutralized by oil additives
D.harmless and have no effect on system components


3) Short cycling of a fridge compressor can occur in which of the following cases?
A.Air ingress into the system
B.A leaking solenoid valve
C.High cooling water temperature going to the condenser
D.Excessive refrigerant charge


4).Which of the following used in boiler treatment is an oxygen scavenging
a.Polymer
b.Neutralizing amine
c.Sodium sulphite
d.Filming amine

5).Fixed vane type emergency fire pump priming vacuum pump.  After one week fire pump not taking suction. The vacuum pump is engaging , but not developing vacuum in the suction side. What will be the cause?
a.Suction filter of the pump clogged
b.Suction filter cover gasket leaks
c.Vacuum pump not overhauled properly
d.Sealing water tank is empty

6).Excessive lubrication in compressor leads to
a.Decompression
b.Detonation
c.Valve carbonisation

7.Corrosion occurs in cooling fresh water system of marine diesel engine
a.Stress corrosion
b.Hot corrosion
c.Bimetallic corrosion
d.Selective phase corrosion

8.Sudden closing and opening of valve in sea water pipeline leads to
a.Cavitations
b.Water hammering
c.Steam hammering
d.There is no problem

9.Centrifugal pump change over for pumping liquid of high specific gravity the discharge at the rated capacity will be
a.Increase
b.Decrease
c.Same
d.Convert 50%

10.Centrifugal pump change over for pumping liquid of high specific gravity what will change?
a.Discharge pressure
b.Discharge head
c.Power consumption
d.Pump speed

11) Weldability steel depends on carbon equivalent
a.CE<= 0.35
b.CE between O.36 AND 0.4
c.CE between o.41 and o.45
d.CE between o.46 and o.5

12.Sea water outlet temperature of LO cooler decreased while main engine load and sea water inlet temperature not changed this indicates
a.Cooler efficiency has increased
b.Cooler efficiency has decreased
c.Sea water outlet temp nothing to do with efficiency
d.The flow of sea water reduced

13.Ballast pump suction filters during ballast in port purpose of getting blocked frequently you should
a.Remove the suction filter
b.\Clean frequently as required and also open and check the sea chest filter
c.Stop using the pump and keep fill in gravity
d.Stop the ballast operation

14.When steel components electroplated with chromium are used in corrosive environment
a.Chorme plating prevents corrosion
b.Protection to the steel will be preferentially corroded
c.Zinc plating is used on top of chrome plating for corrosion protection
d.Thickness of chrome plating to increase

15.Steel is an alloy of iron carbon and alloying components what is the carbon content?
a.Less than 1 %
b.Less than 2%
c.Greater than 2%
d.Any % of carbon

16.Tube in air compressors , self compensating for expansion
a.Straight line tube
b.U tube
c.Coil tube
d.Floating tube

17.___________ boiler feed pumps is used in modern ships
a.Reciprocating pump
b.Heleshaw pump
c.Multistage centrifugal pump
d.Single stage centrifugal pump

18.The actuator of ballast valve in duct keel in port to carry deballast open best practice
a.Interchange from another valve.
b.Manually operated
c.Leave the tank full and ask for shore assistance.
d.Portable pump through manhole.

19.To reduce sulphur corrosion of main engine components
a.Run at normal load
b.Atomizing pressure of fuel
c.Rotar in exhaust valve
d.Fuel feed rate in purifier and purifier in series

20.Crude oil or crude oil+ballast water of same specific gravity ________ current in pump with same discharge pressure
a.More
b.Less
c.Same
d.Does not depend

21.Refrigerant compressor will run continuously
a.Too heavy cooling load
b.Air in the system
c.Insufficient refrigerant
d.Any of the above