279. The by-products of oxidation, as a result of water contamination of hydraulic oil, are generally ?

291. What is the reason why steam pressure reduces its pressure while accomplishing work in the engine or turbine?

197. Which of the items listed below is normally describe a ventilating fan?

159. Visual inspection of a fuel injector valve, removed during overhaul, shows heat discoloration of the lower end of the valve. This is an indication of

281. To what purpose why is strainer install on hydraulic system?

264. The boiler feedwater control valve varies the relationship between steam and water flow during periods of ?

224. In addition to a nozzle, a fuel oil atomizer uses which of the listed parts?

•Pressure equalizing holes in the individual rotor wheels

169. How will you know the firing rate of boiler using steam atomization indicated?

155. Why is thin tipping design procedure is used in modern reaction turbines ?.

293. What type of engine uses a high cetane number?

255. Fuel injectors used in heavy fuel oil systems are usually provided with cooling to reduce ?

228. Schedule of soot blowing for economizers is done for at least ?

226. What does an unusual or new vibration in the hull or propeller shafting indicate?

210. How is the pressure and temperature affected in a diesel engine cylinder during compression?

266. The high pressure cut-out switch will stop the refrigeration compressor when there is ?

222. What will happen if the needle valve in a fuel injection nozzle sticks open ?

275. Which of the following characteristic that determines the temperature to which fuel must be heated for proper atomization is ?

181. In a main propulsion turbine installation, the condensate pump initially discharges to the

156. In a refrigeration system, the amount of superheat absorbed by the refrigerant is adjusted at the

270. In hysraulic system, with an increase in temperature, what will happen to the volume of hydraulic fluid ?

171. Which equipment must be tested NOT more than 12 hours prior to getting underway from a port when the voyage is to be of 48 hours or greater duration?

203. Excessive vibrations created by the main propulsion machinery are detrimental to which equipment listed below-----------?

268. As found in a basic pneumatic automatic combustion control system, the function of standarizing, relay is to

198. Which of the following terms is used to identify the pressure of the liquid ?

251. Which of the following methods is used to counter axial thrust in a single flow reaction turbine ?

153. Which of the following determines the measured gap between the face of the burner atomizer tip nut and the dfifuser plate ?

230. In the water tube boiler, the fire in the furnace is located at the ?

249. In a large slow-speed propulsion diesel engine, the force applied to the piston is

261. Scavenging trunks are more prone to fire because they are ?

288. Nozzle diaphragms are installed in pressure-compounded impulse turbines to

265. It is a form of energy which crosses the boundary of a system during a change of state produced by a difference of temperature between the system and its surroundings.

164. A squeaking sound occurring from within an operating reciprocating air compressor is an indication of ?

297. A reading of zero on a Bourdon tube instrument generally means ?

276. Stern tube is used to ?

253. An internal bypass is provided on some hydraulic system suction strainers to help reduce the posibility of?

172. In the boilerás combustion control system, when the demand for steam is increased

231. On a medium pressure, differential piston, reciprocating air compressor, lubrication of the pistons/cylinders is usually accomplished,

213. What is the use of follow-up gear on an electro-hydraulic steering gear?

175. Main component of the engine to regulate speed is the ?

239. In bunker tanks, which of the following tanks is used in storing fuel ready for immediate use for starting up the diesel engine?

221. Which operating condition of a diesel engine is indicated by excessive firing pressures?

262. In case Engine room is unmanned and Diesel Engine is running, when the temperature of cooling, water outlet is one degree above the limit in long period of time. What is the next immediate better thing to do?

272. Which of the following controls the amount of fuel atomized by a return flow oil burner ?

180. Why should hydraulic cranes be properly warmed-up before they are used?

154. Most of the fuel injection pumps will then closed after injection because they are fitted with a ?

277. Differential needle valves used in fuel injectors are directly closed by what?

285. Which part of a diesel engine that fuel is admitted into the cylider combustion chamber?

258. Which of the following will happen if the fuel oil heater attains excessively high temperature ?

211. If condensate is accumulated in the steam side of a fuel oil heater, it could result in ?

250. Why is it important to apply proper filtering and straining of diesel fuel oil ?

157. If turbine rotor shafts extend through the casing, what external source of sealing steam is used in conjunction with labrynith packing ?.

186. The capacity of a rotary pump, delivering a constant viscosity fluid, will decrease when the discharge pressure is increased, due to ?

244. Which of the following components is directly connected to the propellers and lies mainly encased in the stern tube?

176. Movement of the pump control rack in a fuel injection system having individual plunger-type pumps

271. In a diesel engine, the fuel consumption is expressed in ?

259. Excessive scale formation in a distilling plant may result from?

195. Why is it necessary to transfer fuel oil to the settling tanks ?

292. Before loosening pump covers how should the pressure be checked ?

173. The purpose of the diffuser in a boiler burner assembly is to

223. Which of the listed turbocharger component increases air density and helps improve engineoperating efficiency?

229. Which items on the list could reduce high salinity in a steaming boiler?

174. What is the purpose of the dehydrator in refrigeration?

185. If you hear a crackling sound coming from a salt water centrifugal pump casing, the most probable cause of the noise would be ?

269. An air compressor is equipped with an intercooler and an aftercooler to ?

217. Reduced capacity, vibration and noise at the centrifugal pump suction due to vapor pockets in the fluid being pumped is caused by

209. What part of an engine transmits the reciprocating motion of the piston to the driven unit in the form of rotary motion?

245. In a mechanical compression refrigerating system, what is the main cause of a very low discharge pressure?

177. Most fuel injection nozzles are opened by ?

233. A change in the degree of fuel atomization in a diesel engine cylinder has the greatest effect on the_ _.?

236. Diesel engine crankcase oil mist detectors are designed to analyze ?

189. The purpose of the six-way valve used in an electro-hydraulic steering system is to,

207. Dirty condenser in a refrigeration system would indicate ?

300. Air trapped in the hydraulic fluid of a steering system would be indicated by:

165. The function of seal cages, or lantern rings installed in the centrifugal pump stuffing boxes, is to

248. Regarding the low pressure evaporator steam control orifice in the live steam supply line, the steam at the outlet of the orifice if not properly conditioned will be developed as ?

256. Some diesel engines are fitted with a thermometer in the cooling water outlet from each cylinder. If the cooling temperature from an individual cylinder begins to rise what should you suspect ?

206. What is known as an air motion induced in a four-cycle diesel engine cylinder to improve air fuel mixing?

299. If a higher than normal water level is observed through the inspection port of a low pressure distilling plant, you should suspect ?

168. How is constant steam pressure maintained?

201. Which of the following admits air to the piston of a cylinder relay valves in a correct sequence for engine starting?

205. When fuel viscosity in the service tank needs to be reduced before the atomizer, what should be done ?

289. In the Hydropore tank, What is the device intalled to starts/stops the pump ?

254. What is the function of boiler variable capacity pressure regulator in atomizing fuel insside burner

193. Why diesel engine lubricating oil need more purification compare with the lubricating oil in a gas turbine?

204. How is dissolved oxygen in boiler feed water minimized?

234. Which of the following is the purpose of the diffuser in a burner assembly?

212. Why should the boiler fire side be kept free from soot accumulations ?

187. The measure of the amount of salt present in water is called ?

190. Main engine lube oil sump tank is located ?

191. What is the most important rule for the safe operation of a boiler?

215. When a fuel injection nozzle overheated which of the problems listed below can be expected?

216. An incinerator is a waste disposal unit that will burn ?

152. Gas turbine uses a cycle that includes intake, compression, expansion and exhaust. Which of the following are you going to use to best explain the complete cycle.

219. Rapid fluctuations of absolute pressure in the last effect of a multi-effect submerged tube distilling, plant will tend to cause ?

202. A twin-screw, rotary, positive displacement pump is provided with timing gears. If it were possible to change the lead (pitch) of the screws, which of the following statements would represent the true effect on the pump characteristics?

282. A mooring winch should be equipped with mechanical brakes capable of holding,

167. The bore of a diesel engine describes the ?

214. The most common diesel engine fuel system problems are caused by ?

240. The boiler water having a pH reading of 7.0 is said to be ?