c04

Question

Which of the following problems occurring in a hydraulic system could cause the use of an oil having a viscosity lower than specified?

Answer 1

Increased power consumption

Answer 2

Seal deterioration

Answer 3

Fast response and hunting

Answer 4

Oil film breakdown

Answer 5

braided inner layer(s)

Answer 6

inner tube

Answer 7

outer cover

Answer 8

outer armor

Answer 9

Extensive centrifuging

Answer 10

Wax content

Answer 11

Water content

Answer 12

Acid content

Answer 13

renew the entire oil supply

Answer 14

add make-up oil

Answer 15

purify the oil

Answer 16

operate the machinery at reduced power

Answer 17

machinery bearings subjected to high temperatures

Answer 18

antifriction bearings on general service pumps

Answer 19

bearings subject to fluctuating loads

Answer 20

line shaft bearings

Answer 21

between the pump and the directional control valves

Answer 22

at the pump suction

Answer 23

between the control valves and the actuators

Answer 24

in the actuator return lines

Answer 25

It forms a corrosive acid when mixed with water or water vapor.

Answer 26

It causes excessive smoking and soot at low firing rates.

Answer 27

It doesn't readily burn when combined with oxygen.

Answer 28

It clogs fuel oil strainers more often

Answer 29

antifoaming agents, oxidation inhibitors, and extreme pressure additives

Answer 30

corosive agents, oxidation inhibitors, and extreme pressure additives

Answer 31

corosive agents, oxidation inhibitors, and oxidation inhibitor

Answer 32

corosive agents, anti-foaming, and extreme pressure additives

Answer 33

is an indication of the amount of noncombustble material present in the oil

Answer 34

indicates the quanity of energy released by burning a unit amount of fuel

Answer 35

is useful for determining proper atomization temperatures

Answer 36

reflects the overall thermal efficiency of the fuel oil service systems

Answer 37

dirt is very abrasive when mixed with grease

Answer 38

bearings will leak oil excessively

Answer 39

dirt will cause corrosion of bearing

Answer 40

grease will become inflammable

Answer 41

fuel oil pressure

Answer 42

a cam operated follower

Answer 43

a spring-loaded pressure plate

Answer 44

timing gears keyed to the crankshaft

Answer 45

improve combustion

Answer 46

affect the injection pressure

Answer 47

reduce compression pressure

Answer 48

decrease power output

Answer 49

spring force

Answer 50

cam action

Answer 51

fuel oil pressure

Answer 52

firing pressure

Answer 53

carbon accumulation on the nozzles

Answer 54

cold corrosion of the nozzles

Answer 55

fuel viscosity for better atomization

Answer 56

fuel detonation in the cylinders

Answer 57

Pointing downward or horizontal to prevent kinking of the fire hose

Answer 58

In screened enclosures in all passageways

Answer 59

Where they are protected from weather

Answer 60

In a protected location to prevent cargo damage

Answer 61

overcooling of the nozzle

Answer 62

incorrect fuel rack setting

Answer 63

low firing pressure

Answer 64

excessive lube oil temperature

Answer 65

injector nozzles

Answer 66

intake valves

Answer 67

carburetor

Answer 68

exhaust ports

Answer 69

Hydrodynamic

Answer 70

Mixed lubrication

Answer 71

Boundary lubrication

Answer 72

Forced lubrication

Answer 73

improved atomization

Answer 74

the elimination of valve wear

Answer 75

a decrease in cylinder blow-by

Answer 76

an increase in cylinder blow-by

Answer 77

The overall condition of the bearing surface should be examined

Answer 78

The shaft liner should be inspected for cracks and tested to insure a tight fit

Answer 79

The stern tube should be tested for cracks with dye penetrant

Answer 80

All of these choices

Answer 81

The lack of high pressure fuel lines

Answer 82

Their relatively low injection pressures

Answer 83

Reduced wear of spray orifices

Answer 84

The lessened chance of fuel leaks into the engine sump

Answer 85

To store potential energy in the form of hydraulic fluid under pressure in the system

Answer 86

To collect any dirt in the system

Answer 87

To collect fluid from any small leak

Answer 88

To preheat the fluid during cold weather

Answer 89

injector nozzle tip

Answer 90

turbocharger

Answer 91

carburetor

Answer 92

fuel oil pump

Answer 93

Flash point

Answer 94

Water content

Answer 95

2 to 3 hours

Answer 96

1 to 2 hours

Answer 97

4 to 6 hours

Answer 98

6 to 8 hours

Answer 99

ballast and cargo tanks are separated by cofferdams

Answer 100

all ballast is processed through the oily water separator

Answer 101

ballast is taken on and discharged through a separate main deck riser

Answer 102

all ballast lines, tanks and pumps are independent of those used for oil

Answer 103

Before the end

Answer 104

At the beginning

Answer 105

At the end

Answer 106

After the end

Answer 107

By forced lube oil supply

Answer 108

By sealed self-lubricators

Answer 109

By metered hydraulic oil supply

Answer 110

By cup-fed grease

Answer 111

By adjusting the internal spring loaded pressure relief valve.

Answer 112

By throttling the suction valve.

Answer 113

By throttling the discharge valve.

Answer 114

By fitting an orifice in the discharge line.

Answer 115

Check whether throughput is minimum, check the overflow pipe, check whether the alarm is activated

Answer 116

Check whether throughput is on maximum, check the water seal, check the overflow/water flow off pipe, check inlet temperature and back pressure.

Answer 117

Check the setting of the timers, check the inlet temperature, the back pressure, the bearing temperatures.

Answer 118

Check the Ferodo coupling, the bearing temperatures, the inlet temperature and the back pressure.

Answer 119

carbon accumulation on the nozzles

Answer 120

cold corrosion of the nozzles

Answer 121

fuel viscosity for better atomization

Answer 122

fuel detonation in the cylinders

Answer 123

inject fuel at the proper time

Answer 124

create turbulence in the combustion chamber

Answer 125

aid in completing cylinder scavenging

Answer 126

minimize fuel penetration into the cylinder

Answer 127

Labyrinth seal leaking exhaust gas into the oil.

Answer 128

Damaged or worn turbine side bearing.

Answer 129

The wrong type of oil used.

Answer 130

Cooling water leak into oil space..

Answer 131

Changing filter elements would not interrupt engine operation

Answer 132

Filtering occurs twice in each pass of oil through the system

Answer 133

Clogging will not occur

Answer 134

Dropping pressure is half of that through a single filter unit

Answer 135

flashpoint

Answer 136

pour point

Answer 137

specific gravity

Answer 138

the circuit breaker

Answer 139

for leaks in the suction piping

Answer 140

relief valve is not properly seated

Answer 141

the suction strainer

Answer 142

Centrifugal pumps.

Answer 143

Gear pumps.

Answer 144

Screw pumps.

Answer 145

Reciprocating pumps.

Answer 146

Non-Return Valve

Answer 147

Globel Valve

Answer 148

Gate Valve

Answer 149

Ball Valve

Answer 150

increase in specific gravity

Answer 151

have a higher specific heat

Answer 152

expand in volume

Answer 153

increase in viscosity

Answer 154

retain the lube oil as long as possible before it recirculates through the system

Answer 155

have no plating joints of 90°

Answer 156

be provided with only a perfectly horizontal bottom

Answer 157

provide drain/return lines that are no greater than 24 inches from the pump suction

Answer 158

Excessive piston ring wear

Answer 159

High lube oil viscosity

Answer 160

Insufficient lube oil temperature

Answer 161

Dirty lube oil filters

Answer 162

highest temperature to which the oil may be heated in a storage tank

Answer 163

highest temperature to which the oil may be heated for atomization

Answer 164

minimum temperature to which the oil should be heated for transferring

Answer 165

minimum temperature to which the oil should be heated in the fuel oil heater

Answer 166

Hydraulic cylinder

Answer 167

Hydraulic pump

Answer 168

Hydraulic motor

Answer 169

Hydraulic clutch

Answer 170

produce corrosion in the cylinder and exhaust system at low loads

Answer 171

increase thermal efficiency

Answer 172

cause clogging of the fuel system

Answer 173

increase the ability of the engine to start in cold weather

Answer 174

injector nozzles

Answer 175

intake valves

Answer 176

carburetor

Answer 177

exhaust ports

Answer 178

it forms a corrosive acid when mixed with water or water vapor

Answer 179

it causes excessive smoking and soot at low firing rates

Answer 180

it doesn’t readily burn when combined with oxygen

Answer 181

it clogs fuel oil strainers more often

Answer 182

Oil-resistant sheet packing

Answer 183

Minimize the effect of a listing condition

Answer 184

Unvulcanized packing

Answer 185

Cork sheet packing

Answer 186

increasing the fuel oil heater steam supply

Answer 187

mixing heavier oil with the fuel

Answer 188

changing the atomizer orifice size

Answer 189

increasing fuel oil pressure

Answer 190

calorimeter

Answer 191

open cup test

Answer 192

viscosimeter

Answer 193

hydrometer

Answer 194

Start the cargo pump, then open sea suction valves

Answer 195

Open sea suction valve, then start the cargo pump

Answer 196

Open block valves, then start the cargo pump

Answer 197

Open sluice valves, then start the cargo pump

Answer 198

Whitish lube oil

Answer 199

Partly corroded piston rings

Answer 200

Yellowish lube oil

Answer 201

Poor performance of the engine

Answer 202

Accumulator

Answer 203

pressure compensator valve

Answer 204

sump actuator

Answer 205

Bleed off all pressure within the system

Answer 206

Pressurized the system to test for leaks

Answer 207

Operate the machine until it reaches normal temperature

Answer 208

Disconnect the pump pressure control switch

Answer 209

free surface effect

Answer 210

severe sagging

Answer 211

serious loss of reserve buoyancy

Answer 212

severe hogging

Answer 213

the ability of oil to separate from water

Answer 214

the temperature at which oil flows rapidly

Answer 215

a measure of the water in a lube oil system

Answer 216

an emulsion of different grades of oil

Answer 217

They make sure that no oil is pumped overboard.

Answer 218

They clean engine scavenges.

Answer 219

They remove the water from the fuel before it is burnt.

Answer 220

They make sure that no raw sewage is pumped overboard.

Answer 221

To stabilize the ship by flooding certain designed tanks with seawater

Answer 222

To permit flooding of any fuel oil storage tank on any class of ship

Answer 223

To use it as a secondary service system

Answer 224

To store reserve feed or potable water for extended cruises

Answer 225

injector nozzles

Answer 226

turbocharger

Answer 227

carburetor

Answer 228

exhaust ports

Answer 229

Increase the supply of steam to fuel oil heater

Answer 230

Use lighter kind of fuel oil

Answer 231

Increase the fuel oil specific gravity

Answer 232

Increase the delivery pressure of fuel oil

Answer 233

When the concentration of mist is of the least amount needed for ignition which is 2-5%

Answer 234

When the concentration of mist is of the least amount needed for ignition which is 1%

Answer 235

When the concentration of mist is of the least amount needed for ignition which is 6-10%

Answer 236

When the concentration of mist is of the least amount needed for ignition which is 15%

Answer 237

positive displacement rotary

Answer 238

two-stage centrifugal

Answer 239

nonvented plunger

Answer 240

explosion proof gear

Answer 241

protect the service pump from high discharge pressure

Answer 242

regulate the atomizer oil pressure

Answer 243

control the oil pressure regulators.

Answer 244

supply constant pressure to the burner combustion control valves

Answer 245

fuel oil settler tank

Answer 246

fuel oil heater discharge

Answer 247

contaminated drain inspection tank

Answer 248

double bottom fuel tanks

Answer 249

warming the oil in the burner headers by recirculation prior to boiler light off

Answer 250

transferring fuel from storage to settler tank to avoid erroneous fuel consumption readings

Answer 251

conducting programmed routine maintenance of the meter while underway

Answer 252

finished with engines is given by the bridge

Answer 253

After you start the fuel oil service pump

Answer 254

Before you start the fuel oil service pump

Answer 255

Before you open the recirculating valve

Answer 256

Only if the setters are incapable of heating the oil

Answer 257

Root valve

Answer 258

Return valve

Answer 259

Header valve

Answer 260

Register valve

Answer 261

outside the space concerned

Answer 262

within the space concerned

Answer 263

within the fireroom

Answer 264

the throttle station

Answer 265

fuel oil service pump

Answer 266

main fire pump

Answer 267

all of the above

Answer 268

main circulating/bilge injection valve

Answer 269

Increase heater efficiency

Answer 270

Clean the fuel oil

Answer 271

Prevent tube erosion

Answer 272

Decrease fuel flow

Answer 273

Reduce fuel oil viscosity for proper atomization

Answer 274

Reduce fuel oil specific gravity for better combustion

Answer 275

Increase the fire point of the fuel oil

Answer 276

Improve the flash point of the fuel oil

Answer 277

Fuel may not be heated sufficiently for proper combustion

Answer 278

Fuel will become overheated

Answer 279

Fuel consumption will decrease

Answer 280

Fuel pump slippage will result

Answer 281

Dirty fuel oil strainers

Answer 282

A high relief valve setting

Answer 283

Excessive return line oil pressure

Answer 284

Excessive fuel pump speed

Answer 285

pumpability of the oil

Answer 286

firepoint of the oil

Answer 287

size of the vents

Answer 288

size of the containment area in case of overflow

Answer 289

it forms a corrosive acid when mixed with water or water vapor

Answer 290

it causes excessive smoking and soot at low firing rates

Answer 291

it doesn’t readily burn when combined with oxygen

Answer 292

it clogs fuel oil strainers more often

Answer 293

calorimeter

Answer 294

open cup test

Answer 295

viscosimeter

Answer 296

hydrometer

Answer 297

increase in specific gravity

Answer 298

have a higher specific heat

Answer 299

expand in volume

Answer 300

increase in viscosity

Answer 301

highest temperature to which the oil may be heated in a storage tank

Answer 302

highest temperature to which the oil may be heated for atomization

Answer 303

minimum temperature to which the oil should be heated for transferring

Answer 304

minimum temperature to which the oil should be heated in the fuel oil heater

Answer 305

flashpoint

Answer 306

pour point

Answer 307

specific gravity

Answer 308

increasing the fuel oil heater steam supply

Answer 309

mixing heavier oil with the fuel

Answer 310

changing the atomizer orifice size

Answer 311

increasing fuel oil pressure

Answer 312

Specific gravity

Answer 313

conductivity

Answer 314

machinery space bilges

Answer 315

ballast tanks

Answer 316

sludge tanks

Answer 317

cargo hold bilges

Answer 318

the circuit breaker

Answer 319

for leaks in the suction piping

Answer 320

relief valve is not properly seated

Answer 321

the suction strainer

Answer 322

retain the lube oil as long as possible before it recirculates through the system

Answer 323

have no plating joints of 90°

Answer 324

be provided with only a perfectly horizontal bottom

Answer 325

provide drain/return lines that are no greater than 24 inches from the pump suction

Answer 326

the ability of oil to separate from water

Answer 327

the temperature at which oil flows rapidly

Answer 328

a measure of the water in a lube oil system

Answer 329

an emulsion of different grades of oil

Answer 330

low oil demulsibility

Answer 331

high TBN value

Answer 332

low oil floc point

Answer 333

low oil neutralization number

Answer 334

displace lubricating oil required in areas of friction

Answer 335

decrease sludge formation in lubricating oil

Answer 336

cause water to separate from the oil

Answer 337

improve the lubricating oil viscosity

Answer 338

maintain a pressurized fluid film between moving surfaces

Answer 339

maintain even distribution of bearing wear

Answer 340

maintain a constant oil temperature

Answer 341

remove entrained water

Answer 342

high speed continuous operation of roller bearings

Answer 343

gear shaft bearings

Answer 344

heavily loaded and high speed ball bearings

Answer 345

low and moderate speed ball bearings

Answer 346

35-40% of the void space in the bearing

Answer 347

10-15% of the void space in the bearing

Answer 348

90-95% of the void space in the bearing

Answer 349

65-70% of the void space in the bearing

Answer 350

remove additives from the lube oil

Answer 351

utilize exotic and expensive filtering media making them too costly for use.

Answer 352

are only effective at temperatures below 100°F

Answer 353

can adsorb no more than five times their weight in water

Answer 354

Absorb sudden changes in hydraulic fluid flow occurring in the system

Answer 355

Provide an area where air can separate from the oil

Answer 356

Provide an area to separate solid contaminants from the oil

Answer 357

Act as an oil and water separator

Answer 358

Accumulator

Answer 359

Clean the fittings before they are disconnected.

Answer 360

Place drip pans under leaky fittings.

Answer 361

Seal any cracks in lines with Permatex.

Answer 362

Coat all threads with graphite oil.

Answer 363

I, II and III

Answer 364

I and II only

Answer 365

II and III only

Answer 366

by gravity

Answer 367

at a rate of 60cc per second

Answer 368

through a standard orifice at a specified temperature

Answer 369

Increased power consumption

Answer 370

Seal deterioration

Answer 371

Fast response and hunting

Answer 372

Oil film breakdown

Answer 373

viscosity index

Answer 374

weight designation

Answer 375

thermal change value

Answer 376

pour point

Answer 377

Deterioration of paints, seals, metals, and electrical insulation may occur.

Answer 378

Fluid viscosity always increases as a normal result of its use.

Answer 379

Decreased wear rates of components is an advantage of its use.

Answer 380

Only chemically active filters may be used.

Answer 381

pour point

Answer 382

cloud point

Answer 383

low hydraulic oil viscosity

Answer 384

pump bearings in poor condition

Answer 385

excessively worn actuator-piston packing

Answer 386

broken directional control valve centering springs

Answer 387

oxidation by-products

Answer 388

microscopic steel shavings

Answer 389

abrasive waste

Answer 390

anti-oxidant compounds

Answer 391

the system has been drained and then filled with new oil

Answer 392

adding small amounts of oil to the system

Answer 393

the system has been overheated

Answer 394

the system has been idle for a long period of time

Answer 395

excessively high oil viscosity

Answer 396

insufficient load

Answer 397

reservoir level being maintained two inches above normal

Answer 398

relief-valve pressure setting too high

Answer 399

clogged suction strainer in the reservoir

Answer 400

high fluid level in the reservoir

Answer 401

hydraulic fluid low floc point

Answer 402

excessive discharge pressure from the pump

Answer 403

erratic or jerky motion of the actuator

Answer 404

a pump discharge pressure that is consistent, but higher than normal

Answer 405

consistently faster response or movement of the actuator

Answer 406

overspeeding of the pump

Answer 407

atmosphere as heat

Answer 408

reservoir expansion chamber

Answer 409

hydraulic piping flexibility

Answer 410

fluid as friction

Answer 411

low fluid viscosity around the shaft seal

Answer 412

overload on the pump motor

Answer 413

low fluid level in the reservoir

Answer 414

high oil level in the sump

Answer 415

steam pressure in the heater

Answer 416

shape of the heating coils in the heater

Answer 417

oil pressure in the heater

Answer 418

rate of oil flow through the heater

	Criado por mrk nthny mais de 7 anos atrás

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