Yacht Small Vessel Second Engineer Exam - Auxiliary Equipment Part I

Two common methods for remote operation of tank quick closing valves are hydraulic and pneumatic systems.

Four safety features of main air receivers include safety valves, pressure gauges, pressure switches, and relief valves. Safety valves release excess pressure to prevent over-pressurization.

Centrifugal pumps are not self-priming because they rely on fluid being present in the casing to operate. They cannot draw fluid into the suction line on their own.

<p>Three functions of air conditioning in marine engineering are controlling temperature, humidity, and air quality within enclosed spaces.</p> Signup and view all the answers

<p>Clear working methods and stating all formulae are important in engineering examinations to demonstrate the candidate's understanding of the concepts, allow for partial credit, and ensure transparency in the problem-solving process.</p> Signup and view all the answers

<p>Centrifugal pumps operate based on the principle of utilizing centrifugal force to move fluid. They consist of an impeller that spins and imparts kinetic energy to the fluid, causing it to move through the pump.</p> Signup and view all the answers

<p>Tank quick closing valves are typically fitted at the bottom of tanks or compartments to quickly isolate them in case of emergency.</p> Signup and view all the answers

<p>Absolute humidity refers to the actual amount of water vapor present in the air.</p> Signup and view all the answers

<p>Relative humidity is the ratio of the actual amount of water vapor in the air to the maximum amount it can hold at a given temperature.</p> Signup and view all the answers

<p>Dew point is the temperature at which air becomes saturated with water vapor and condensation begins.</p> Signup and view all the answers

<p>Steering can be maintained manually by using the emergency steering gear or by directly operating the steering gear mechanism.</p> Signup and view all the answers

<p>Steering can be achieved by using the mechanical backup system, which may involve manual operation of the steering gear.</p> Signup and view all the answers

<p>Advantages: good load-bearing capacity, self-lubricating. Disadvantages: high maintenance, prone to damage.</p> Signup and view all the answers

<p>Single phasing refers to a condition in which one of the three phases supplying a motor is lost.</p> Signup and view all the answers

<p>Effects include overheating, reduced efficiency, and potential damage to the motor windings.</p> Signup and view all the answers