301. In which of the listed components of refrigeration system does a superheating of the refrigerant take place?

302. How does the power transfer from the engines located deep inside the hull of a vessel to the propellers at the aft. The answer lies in an integral mechanical component known as

303. An eccentric reducer, used as a transition piece between a centrifugal pump suction flange and the suction piping flange, must be installed with the eccentric portion below the suction pipe centerline to

304. Faulty operation of diesel engine fuel injection nozzles can be caused by ?

305. Why cruise ship is one of the main candidates for gas turbine propulsion?

306. A boiler fuel burner that is equipped with a variable capacity pressure atomizing system functions to

307. The cooling effect in a refrigeration system is produced by.

308. In order to move the rudder, what must be created by steering gear?

309. The ash content of a fuel oil is significant to the operating engineer because ?

310. Fuel leakage in high-pressure fuel pipe between the injection pumps and the fuel nozzle needs immediate repair because of

311. The follow-up mechanism for any steering gear is to assure one rudder position for each corresponding position of the helm. Therefore, the follow-up mechanism should ?

312. At what pressure should a cylinder relief valve of an internal combustion engine be set to relieve?

313. What part of the steam assisted atomizer where the fuel/air mixtures take place ?

314. What component is used to thoroughly separate small particle contamination from hydraulic fluid?

315. In most horizontally split centrifugal pump casings, wearing rings are prevented from rotating by

316. What can be found when subjecting a metal to an axial ?

317. Almost all solenoid valves are actuated by ?

318. In a centrifugal pump, the seal piping directs liquid from the discharge side of the pump to the

319. The range of values around a setpoint of a measured variable where "no action" occurs in an automatic flow controller is called:

320. Component of an engine used to increase scavenging air is called

321. Through which part of the air register assembly does the largest quantity of air passes through?

322. If the moisture content of air increases, what could happens to the difference between the dry bulb and wet bulb temperature ?

323. Slag build up on boiler furnace refractory is undesirable because it causes

324. Operating a rotary gear pump far below its rated speed when handling low viscosity liquids, will cause its volumetric efficiency to ?

325. KPa is equivalent to ?

326. Why are air compressors equipped with unloading system?.

327. What is the most effective way of detecting any malfunction of machinery during their operation?

328. Which metal is bolted to the ship's hull to preserve the steel against pitting?

329. Which of the following statement is true if the lube oil temperature is allowed to become 'excessively high in the heaters?

330. What is the simplest method used for determining if a centrifugal pump is operating as designed?

331. It refers to an internal combustion engine practice, where there is a necessity of heating the oil, to ensure easy flow and good atomization --------

332. Why should a boiler furnace be purged before the burner is lit off?

333. Maximum rated horsepower of a diesel engine is attained ?

334. An inadequate reciprocating bilge pump discharge is most often caused by ?

335. When installing a new rotary pump, the suction piping should

336. After the installation of new impeller wearing rings by pressing them onto the pump impeller hub, it is advisable to ?

337. A diesel engine fails to start due to excessive water in the fuel. Before the engine can be started. the water should be removed from which of the following ?

338. When a burner atomizer is improperly positioned in the distance piece, it may cause ?

339. Cylinder wear may take place as a product of mechanical wear,corrosion and combustion which is hard to remove?

340. Why are burner registers to be left open for few minutes when securing burners ?

341. In a large slow-speed propulsion diesel engine, the side thrust on the crosshead is the direct result of?

342. Refrigerant is circulated through a refrigeration systemb y the_

343. Salinity cell is installed in the distilling unit to indicate the ?

344. A suitable location for the installation of an impulse type steam trap would be in the ?

345. In a refrigeration system how do you clean the oil filter ?

346. Which type of pump is used in the steering gear of modern ships?

347. In a flash type distilling unit, which of the following first absorb heat from the evaporator feed ?

348. According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 12 knot service speed, must be able to meet the rudder movement requirements at which of the minimum vessel speeds listed below?

349. Noise and vibration in a condensate pump would be caused by ?

350. Provision is to be made for ventilation of an enclosed diesel engine crankcase by means of a small

351. The functional difference between a 2-stroke and a 4-stroke cycle engine is in the number of ?

352. A turbocharger is an air compressor driven by ?

353. Refrigerant is circulated through a refrigeration system by the ?

354. For proper combustion where the ratio of fuel oil and air is necessary, the term stoichiometric mixture means ?

355. An unloader is installed on an air compressor to

356. Settling tanks are part of the fuel oil system used for

357. Calculate the friction power of the engine with indicated power output of 190 hp and shaft power of 162 hp

358. Where can you find the refrigerant sight glass of a multi - box refrigeration system?

359. Short cycling of a refrigeration compressor refers to ?

360. In a diesel engine, an integral liner is one in which the cooling water_

361. When an engine coupled with the large vibrational shocks that act on the shaft, and there could be permanent damage to the propeller shaft and Why?

362. A hydraulic actuator is a device that uses hydraulic energy coming from a hydraulic pump and produces linear mechanical power. What component of the device that produces linear mechanical power?

363. What will happen to a diesel engine if air is present in the fuel lines leading to the fuel injection nozzle ?

364. The oil scraper ring of a 4-stroke engine piston is installed at this part.?

365. Increases in rotor clearance in a rotary pump will ?

366. What will happen if the fuel injected too early in the injection cycle?

367. In an electro-hydraulic steering gear, any change in relative position between synchronous receiver and the follow-up gear will result in

368. In order to recognize the amount of anchor chain paid out, specific portions of the chain are color coded and wrapped with wire. The first shot of chain is painted ?

369. Which of the following is the possible cause of fluctuating steam pressure of atomizing steam system is ?

370. One of the main functions of wearing rings, as used in a centrifugal pumps, is to

371. What result will be achieved in maintaining fuel oil temperature properly ?

372. In a refrigeration system, the amount of refrigerant admitted to the evaporator is directly related to

373. The degree of fuel atomization in a diesel engine cylinder depends primarily on

374. An electric motor failure in an electro-hydraulic steering gear system would cause the rudder to

375. In a low pressure air compressor, the loss of volumetric efficiency normally results from

376. Carbonization in the surface of the fuel oil heater will reduce the heating capacity because ?

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

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

379. Proper atomization of fuel in diesel engine combustion chambers will

380. Which of the following is a function of burner atomizing steam?

381. As the pump speed increases, what will happen to NPSH (Net positive suction head)?

382. The best action to do if the main engine slows down and the cause is not detected immediately is to?

383. What is the means of removing the heat of condensation from the refrigerant in a normal refrigerating cycle?

384. The shaft coupling for the gear pump is prevented from rotating on the shaft by a ?

385. One advantage of a vacuum feed sight glass indicator used on cylinder lubricators over the discharge side liquid filled type sight glass is ?

386. After changing out the fuel filters, the diesel engine fails to restart. What could be the probable cause ?

387. A recirculating, or bleed off line is installed on a centrifugal pump in order to ?

388. What type of pump is used in the steering gear of modern ships?

389. An advantage of a helical gear pump over a simple gear pump is that the helical gear pump is capable of?

390. If a centrifugal pump operating with a positive suction head vibrates, or becomes noisy, the cause could be

391. In refrigeration system, the heat normally producing the flash gas at the thermostatic expansion valve, is obtain from

392. Prior to departure what preparations are required regarding pistons and cylinder liners of a diesel engine?

393. What needs to be done in order to maintain the gas turbine sustainable power output

394. If a leak is suspected in a tube heat exchanger what should be checked FIRST-?

395. Where is the temperature of the refrigerant highest?

396. Clearances between the impeller hub and casing of a centrifugal pump are checked with the use of

397. While making engine room sounds at sea, you observe excessive steam leaking from the forward gland on the high pressure turbine . This may indicate that the

398. As per regulations electric and electro-hydraulic steering gear motors are required to be

399. How does fuel oil atomizers function in boilers?

400. In a hydraulic system, an O-ring seal will begin to leak when it has lost its interference fit due to which of the following