128. Purifier and clarifier are both working on the principle of

102. An upper average ash content of 0.1% by weight is generally in heavy fuel oils. Which of the following conditions could be expected if the ash content increases above this amount?

1. Very small irregularities on the seat and disk of a globe valve may be manually repaired with the valve in place by the process known as

10. What is the allowed quantity of oil in water that an oily water separator should be following?

100. Setting the relief valve opening pressure in a hydraulic system lower than the required operating pressure will result in ?

100. Setting the relief valve opening pressure in a hydraulic system lower than the required operating pressure will result in ?

101. Separator functions to separate both solid and liquid impurities of oil is known as

103. What parts of Discharge Oil monitoring and control system unit calculates the oil discharge in litres/nautical miles and the total quantity when permissable limit has been reached?

104. Valves used in the machinery space piping systems, and constructed with threaded valve systems, must be

105. What control valve listed below is NOT considered to be hydraulic system directional control valve?

106. What particular type of sewage treatment is basically a storage tank which collects solid matters for disposal in permitted areas or to a shore collection facility ?

107. The purpose of the reaction turbine dummy piston is to

108. Viscosity of fuel in the atomizer can be reduced by.

109. By which of the following is the attached vacuum pump of a ballast pump is driven?

11. In a diesel engine, excessive lube oil consumption can be caused by

110. While the oily-water seperator is operating in the processing mode, if a low vacuum, what is the probable cause?

111. What equipment is used to compress a gas and to circulate it around the piping system?

112. The Volume of the pump chambers are increase and decreased by the reciprocating motion of the

113. The main feed pump discharge pressure is controlled by the admission of steam to the turbine. The admission of steam is regulated by a.

114. Which of the following statements represents the function of insulating brick?

115. Longitudinal expansion of a boiler water drum is permitted by the .

116. The viscosity of fuel oil is indicated by its

117. Differential needle valves used in fuel injectors are directly closed by

118. The net positive suction head of a boiler centrifugal feed pump should be calculated over and above the

119. When the centrifugal disk type purifier is in separation process, the bowl position is,

12. In the hydraulically operated turbine gland seal regulator, illustrated, the device used as the sensing unit is called alan

120. In oily water separator which one of the following stages resposible for removing physical impurities present and promotes some fine separation?

121. What particular device is installed in the fuel systems of the ship that is used to control the fuel oil temperature to provide correct viscosity for combustion?

122. The amount of sodium phosphate in treated boiler water can be measured by alan.

123. If one of the bilge system manifold valve does not properly seat, what effect could be expected during pumping operation ?.

124. Low pressure steam is used to keep air from leaking into turbine casing along the turbine shaft. For this purpose, which of the following steam systems is used?

125. Purifier is using gravity disc during oil purification to establish correct

126. What will you install in order to prevent accidental flooding of the engine room bilges?

127. What is the result of the centrifuge if the bowl of a centrifugal purifier is improperly reassembled with O-ring seals that have become hard and flat ?

129. Which of the following actions should be taken FIRST if one-bilge wells of the multiple suction bilge system is unable to pump out ?

13. Which of the devices listed is used to keep overheated condensate from flowing to the deaerating feed tank?

130. To avoid oil from discharge into the sea when ballasting

131. Modern fuel oil temperature control devices are regulated to obtain a desired viscosity rather than a specific fuel oil temperature because .

132. Maximum limit of fuel density to allow efficient oil cleaning of purifier is

133. Testing boiler water for chloride content will indicate the amount of .

134. Prior to centrifuging, a heavy residual fuel oils are heated to

135. If a centrifugal pump is not rotating after being overhauled, what may be the possible cause?

136. The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will

137. What reason why there is Less vacuum in centrifugal pump?

138. Condensate pumps have distinctly noticeable characteristics and are recognized by their .

139. In a disk type centrifugal purifier operating as a separator, if diesel fuel was discharging from the waste water outlet, you should

14. Which of the listed pumps discharges directly to the fuel oil settling tanks of a diesel engine main propulsion plant?

140. What is the cause when a centrifugal pump may fail to deliver water when first started?

141. A test of boiler water for chloride content indicates the amount of .

142. What functions to provide the right amount of fuel at the right moment and in a suitable condition for the combustion process?