Which of the following consist of alternating rows of rotors and stationary blades? A. Axial flow compressors B. Axial flow pumps C. Fresh water pump D. Cooling pump

Which of the following is an important aspect in maintaining the functionality of a centrifugal pump? A. Flushing B. Priming C. Cooling D. Heating

Which of the following refers to a closed vessel in which fluid is heated up to high-pressure steam? A. Purifier B. Boiler C. Distiller D. Pumps

Which of the following type of boiler in which the fire or hot gas is present inside the tubes and water surrounds these tubes? A. Fire-tube boiler B. Water tube boiler C. Water distiller D. Water purifier

Which of the following are used to promote incompressible fluids and are used for large volume flows with low delivery heads? A. Gear pump B. Screw pump C. Axial pumps D. Rotary pump

Which of the following are sometimes called propeller pumps because they operate essentially the same as the propeller of a boat? A. Axial flow compressor B. Propeller pump C. Water pump D. Axial flow pumps

Which of the following type of boiler in which the water is present inside the tubes and fire or hot gases surround these fire tubes? A. Water purifier B. Water distiller C. Water-tube boiler D. Fire tube boiler

Which of the following refers to any fuel-fired combustion equipment designed primarily to produce steam for uses other than propulsion, including, but not limited to, heating of residual fuel and liquid cargo? A. Auxiliary pump B. Auxiliary fan C. Auxiliary machinery D. Auxiliary boiler

Which of the following is being produced either on board or bunkered that must be sampled frequently and treated in accordance with statutory regulations? A. Domestic water supply B. Bunkered water supply C. Boiler water supply D. Sea water supply

Which of the following type of rotary pump equipped with screws that mesh together and rotate within a cylindrical cavity or liner? A. Centrifugal pump B. Screw pump C. Rotary pump D. Gear pump

Which of the following provides the head or pressure to supply the water when required? A. Compressed Water B. Neutralizer C. Compressed air D. Water Generator

Which of the following utilizes the heat in flue gases from combustion processes or hot waste air flows from industrial processes to generate hot water or saturated steam? A. Waste heat boilers B. Water tube boiler C. Fire tube boiler D. Waste air flow

Which of the following recovers heat energy from the exhaust gases of a reciprocating diesel, gas or bio gas fueled engine and utilizes this energy to heat water? A. Exhaust gas manifold B. Intake manifold C. Exhaust gas heat exchanger D. Exhaust gas economizer

Which of the following produce low-pressure saturated steam for domestic and other services? A. Steam to steam B. Steam-to-steam generators C. Steam to steam line D. Steam to steam motor

Which of the following refers to a process by which some of a liquid instantly boils — or flashes — after it has been heated and sent through a chamber that has reduced pressure? A. Flash evaporator B. Flash point C. Pour point D. Flash evaporation

Which of the following heats the water in one compartment before being released into a second chamber in which the pressure is substantially lower? A. Flash evaporator B. Flash evaporation C. Flash point D. Pour point

It is the production of pure water from sea water by evaporation and re-condensing. A. Evaporation B. Distillation C. Distiller D. Distilled

Which of the following may occur in boilers with too many alkaline salts and operating strains? A. Pipe cracking B. Tube cracking C. Caustic cracking D. Hose cracking

What are the two types of salts that are the primary causes of hardness? A. Chlorides and sulphates B. Bicarbonates and calcium C. Magnesium and sulphur D. Calcium and magnesium

Which of the following alkaline salts is being named as “temporary hardness”? A . Calcium and magnesium bicarbonates B. Chlorides and sulphates C. Sulphates and nitrates D. Calcium and Sulphates

What is the basic principle of the working of a biological treatment plant? A. Decomposition of the raw sewage B. Producing more sewage C. Distribution of sewage D. Restoring the sewage

The main objective of sewage treatment is to; social economic and public health from the pollutants. A. Provide food for seafarers B. Increase economic status of shipping companies C. Protect the environment D. To protect the seafarers

Which of the following is produced onboard which should be taken utmost care of if one wants to save him and his shipping company from heavy fine. A. Discarding Sewage B. Planting Sewage C. Sewage Processing D. Recycling Sewage

Which of the following refers to a process that treat human wastes by using bacteria and other microbial accomplices to break them down into other byproducts such as sludge? A. Sewage Decomposition System B. Biological Sewage Treatment System c. Sewage Distribution System D. Sewage Management System

Which of the following is the function of a fin stabilizer found at the bottom part of the ship’s hull? A. To keep the ship running in any direction. B. To keep the ship running in backward direction. C. To protect the ship from damages caused by big waves. D. To provide resistance to the excess rolling of ship in either direction.

Which of the following is employed to aid in the chemical breakdown process and physically break up the sewage? A. Sewage Processor B. Sewage Discharge Operator C. Comminutor D. Decomposer

Which of the following refers to the formation of bubbles at the pump inlet, followed by their sudden collapse, which can cause permanent damage? A. Condensation B. Cavitations C. Evaporation D. Distillation

Which of the following is one of the commonly used steering gear systems and is quite expensive in construction? A. Ram Type Hydraulic Steering Gear B. Hydraulic Type Steering Gear C. Pneumatic Type Steering Gear D. Electric Type Steering Gear

Which of the following refers to an indispensable part of the entire steering gear arrangement of ships and dictates the exact behavior of the rudder response? A. Rudder Stock B. Rudder Angle C. Rudder Post D. Rudder Position

Which of the following refers to a system which is used during the failure of the main steering system of the ship? A. Emergency Control System B. Emergency Alarm System C. Emergency Steering System D. Emergency Operation System

Which of the following is used when the pressure requirement is 60 to 100 bar for producing required torque? A. Rotary Vane Type B. Hydraulic Type C. Pneumatic Type D. Ram Type

Which of the following is a hydraulic control system employing a transmitter, a receiver, pipes and a charging unit? A. Electric Control B. Manual Control C. Telemotor Control D. Emergency Contro

In what direction do the vanes have when chambers A and C are pressurized? A. Anti-Clockwise Rotation B. Clock-Wise Rotation C. Upward Direction D. Downward Direction

Which of the following is the type of electrical generator that converts mechanical energy into direct current electricity? A. DC Generator B. AC Generator C. Shunt Wound Generator D. Series Generator

In what law does the principle of operating a DC generator is being based? A. Faraday’s Law B. Cole’ Law C. Newton’s Law D. American Law

Which of the following has the field and armature circuits connected in parallel? A. Shunt-Wound Motor B. DC Compound Motor C. Series Generator D. AC Generator

Which of the following is the combination of a series-wound and shunt-wound generator? A. Complex Generator B. Compound Generator C. Multiple Generators D. Double Generator

Which of the following is the main responsibility of an alternator? A. Run the generator B. Convert mechanical energy to electrical energy C. Operates the ship D. Convert electrical energy to mechanical energy

In what way does the electric current in the rotor produces torque in an induction motor from the rotating magnetic field of the stator winding? A. Via Manual Operation B. Via Electromagnetic Radiation C. Via Electromagnetic Induction D. Via Electric Control

Which of the following refers to the speed of the rotating magnetic field in the stator? A. Synchronous Speed B. Asynchronous Speed C. Random Speed D. High Speed

Which of the following provides the head or pressure to supply the water when required? A. Compressed Water B. Neutralizer C. Compressed air D. water genarator

Which of the following is being produced either on board or bunkered that must be sampled frequently and treated in accordance with statutory regulations? A. Domestic water supply B. Bunkered water supply C. Boiler water supply D. Sea water supply

Which of the following type of rotary pump equipped with screws that mesh together and rotate within a cylindrical cavity or liner? A. Centrifugal pump B. Screw pump C. Rotary pump D. Gear pump

Which of the following are used to promote incompressible fluids and are used for large volume flows with low delivery heads? A. Gear pump B. Screw pump C. Axial pumps D. Rotary pump

Which of the following is an important aspect in maintaining the functionality of a centrifugal pump? A. Flushing B. Priming C. Cooling D. Heating

Which of the following is being used to for the discharge of bilge, sewage, sludge and oily sea water? A. Single Screw Pump B. Double Screw Pump C. Centrifugal Pump D. Axial Flow Pumps

Which of the following refers to a type of rotary pump which is equipped with screws that mesh together and rotate within a cylindrical cavity or liner? A. Screw pump B. Centrifugal pump C. axial pump D. radial pump

Which of the following refers to the formation of bubbles at the pump inlet, followed by their sudden collapse, which can cause permanent damage? A. Condensation B. Cavitation C. Evaporation D. Distillation

How do the cylinders that are directly coupled to electrically driven hydraulic pumps generate hydraulic pressure? A. Through Valves B. Through Pipes C. Through Pumps D. Through Motor

Which of the following refers to a system which is used during the failure of the main steering system of the ship? A. Emergency Control System B. Emergency Alarm System C. Emergency Steering System D. Emergency Operation System

Which of the following is one of the commonly used steering gear systems and is quite expensive in construction? A. Pneumatic Type B. Ram Type C. Rotary Vane Type D. Hydraulic Type

Which of the following is a hydraulic control system employing a transmitter, a receiver, pipes and a charging unit? A. Electric Control B. Manual Control C. Telemotor Control D. Emergency Control

Which of the following is a group of automated devices that manage the conversion, movement, and distribution of electrical energy in home or commercial equipment as well as the flow of electricity required for its correct operation? A. Telemotor Control System B. Emergency Control System C. Electric Control System D. Manual Control System

In what direction do the vanes have when chambers A and C are pressurized? A. Anti-Clockwise Rotation B. Clock-Wise Rotation C. Upward Direction D. Downward Direction

hich of the following has the field and armature circuits connected in parallel? A. Shunt-Wound Motor B. DC Compound Motor C. Series Generator D. AC Generator

Which of the following is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current? A. Generator B. Alternator C. Induction Motor D. Converter

Which of the following AC distribution systems that operating voltage is 11kV and distribution is of 3 phase, 3 wire system? A. Primary AC Distribution System B. Secondary AC Distribution System C. Electrical Energy Transmission System D. Complex AC Distribution System

Which of the following refers to a device that converts an oscillating two-directional alternating current (AC) into a single-directional direct current (DC)? A. Fuse B. Circuit Breaker C. Acid Battery D. Rectifier

What type of ship that carries perishable or temperature sensitive cargo such as food, chemical, or liquefied gas, where temperature is controlled by the refrigeration plant of the ship? A. Cargo Ships B. Container Ships C. Passenger Ships D. Reefer Ships

Which of the following is the main purpose of ship’s refrigeration plant? A. To avoid any damage to the cargo or perishable material so that it is transported in good and healthy condition. B. To transport all perishable material on time. C. To carry general cargoes and transport to right destinations. D. To keep the passengers safe in the entire duration of the voyage.

Which of the following controls the room temperatures where heated or chilled air may then be supplied as required and humidity control is also provided? A. Heater B. Refrigeration Plant C. Ventilator D. Thermostat

What is considered as the normal secondary refrigerant which may or may not have a glycol solution added in the case of air conditioning plants? A. Fresh Water B. Sea Water C. Alcohol

Which of the following components of stabilizer system that positioned with a set forward and aft and the fins are connected to a shaft that extends inside the vessel to the hull unit? A. Two Fins B. Four Fins C. Two Hull Units D. Four Hull Units

Which of the following components of stabilizer system where the fins can be locked or rotated for underway and zero speed performance? A. Two or Four Fins B. Single Fin C. Two or Four Hull Units

n what way does hydraulic power is being converted to mechanical power? A. Through Hydraulic Pumps B. Through Hydraulic Pipes C. Through Hydraulic Cylinders

Which of the following component of stabilizer system that is hard mounted to the interior of the hull? A. Two or Four Fins B. Single Fin C. Two or Four Hull Units D. Single Hull Unit

The main objective of sewage treatment is to; social economic and public health from the pollutants. A. Provide food for seafarers B. Increase economic status of shipping companies C. Protect the environment D. To protect the seafarers

Which of the following has fixed housing in which two vanes rotate and the housing along with the vanes form four chambers?