When overhauling engines in bad weather onboard
Old machinery space log book are kept in safe custody
In case of failure of control air supply ,some valves continue locked in the position they were at the time of failure . They are said to be-
If the superheat value of a thermostatic expansion valve is set too low________
At which of the following locations would a duplex pressure gage most likely be located?
One function of the air receiver in a compressed air system is to _____________.
A major controlling factor in the location of the condensate return piping from a heating system is/are
Inert Gas System should be capable of delivering Inert Gas at the rate of at least____________________________
Why should a person performing maintenance on an air compressor wire and tag the system valves closed?
In the Alcap principle of centrifugal separation______________________
High pressure cut out of a refrigerant system can activate due to which of the following faults?
A distinguishing feature of an eductor, when compared to other pumps, is the ______________.
In the air conditioning of a ship a “Comfort Zone” constitutes
Which of the following chemical compounds prevents caking of powder in dry chemical powder fire extinguisher?
The FIRST thing to do to ensure that a refrigeration unit will not start while undergoing repairs, is to ____________.
The ash content of a fuel oil is significant to the operating engineer because it
Before any work is to be carried out on a burner in an automatically fired auxiliary boiler, you should always
When securing a flash-type evaporator for an extended period of time, you should _____________.
The static positive suction head of a pump is the
Two compressors should not be run in parallel because
To prevent electric shock during electric arc welding
One of the main differences between the various types of screw pumps is in the __________.
Sand impregnated with chemicals is kept in metal containers with a shovel, in the engine room, for the following purposes
Which of the processes listed, consumes the greatest amount of power while producing the greatest amount of heat?
Refractory damage in boiler furnace onboard is caused due to
The term referring to the number of teeth per inch on a hacksaw blade is known as the
Which of the following components in an Inert Gas system ensures that vapours are vented well clear of the working deck? i) High velocity vents ii) Mast risers
Which features of a centrifugal pump reduce the need for renewing worn impellers and pump casings?
Which of the following statements describes the purpose of the split inflatable seal installed aft of the primary seal assembly for the propeller shaft?
To maximize the effectiveness of soot blowing onboard
Which of the listed conditions can lead to cavitation in a centrifugal pump?
A ship is required to carry an Oil Record Book, and must maintain the book as per rules on board for _______________.
Some of the following are preferred refrigerants of the future
Injecting water into the combustion chamber of marine engines is a primary method of reduction of which of the following air pollutants?
Isolation of filters onboard prior to cleaning is done by
The passenger spaces of a passenger ship is protected against major fires by a
Amount of distilled water produced in fresh water generator onboard decreases with
In any air system a safety device should be placed between any two points where air can be trapped between any two valves.
The primary advantage of a central cooling system is______________________
A high pressure differential in a main engine fuel oil filter onboard can be best reduced by
An acceptable method of dealing with accumulated oil found in the pump room bilges is to ______________.
Soot blowing of boilers onboard can be carried during
Which of the following guidelines is considered to reflect good design practices of shipboard steam heating systems?
The portion of a hydraulic hose that determines its overall strength, is the _____________.
Which of the following is most suited to act as a deck air compressor?
Which of the following type of pumps is most suited to act as Waste Oil Sludge Pump?
Pumps impart energy to a fluid but the energy required to bring the fluid to the pump may be provided by________________
Safety of Gas cylinders used for cutting and welding is ensured
Air conditioning system air handling units must have their air filters cleaned at regular intervals in order to prevent______
Which of the following actions, pertaining to saltwater lubricated stern tube stuffing boxes, is usually observed when the ship is expected to be in port for an extended period?