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IKING 2 > QUIZZES > Flashcards

QUIZZES Flashcards

1
Q

For equalizing energy absorption and exertions in
mechanical work, this part of the machine prevents
excessive change of speed or to regulate work speed.
(ME BD., APR. 2006)
A. Actuator C. Flywheel
B. Bearing D. Shaft

A

C

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2
Q

Absorb and equalize energy in case the resistance to
motion varies, or used to equalize the energy exerted and
the work done. (ME BD., OCT. 2000)
A. Balance wheel C. flywheel pulleys
B. Flywheel D. All of the above

A

D

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3
Q

From experience, specify the conventional limit of flywheel
operation to be at 6,000 fpm for cast iron and _________
fpm for cast steel. (ME BD, APR. 1998)
A. 7,000 C. 10,000
B. 8,000 D. 12,000

A

C

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4
Q

A rule of thumb, the speed limit of the flywheel rim speed
should be 6,000 fpm for cast iron material and for cast iron
flywheel rim at ______ meters per minute. (ME BD. OCT.
1997)
A. 3,050 C. 7,000
B. 4,500 D. 10,000

A

A

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5
Q

(ME BD EXAM) What is the recommended coefficient of
fluctuation of flywheels for punching, shearing, pressing
machine?
A. 0.005-0.1
B. 0.007-0.01
C. 0.03-0.05
D. 0.01-0.03

A

A

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6
Q

Flywheel arms are usually of ________ cross-section.
A. Circular C. Rectangular
B. Elliptical D. Squared

A

B

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7
Q

Which of the following stresses acts on the spokes of the
flywheelvi?
A. Direct shear stress C. Torsional shear stress
B. Tensile stress D. Compressive stress

A

B

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8
Q

) In the selection of wire rope, regular lay
means wires and strands are arranged twisted in ____.
A. Any direction C. The opposite direction
B. The long direction D. The same direction

A

c

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9
Q

An extra-flexible hoisting rope application is _______. (ME
BD. OCT. 1999)
A. 6 × 7 C. 6 × 37
B. 6 × 19 D. 7 × 7 IWRC

A

c

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10
Q

All terms and abbreviations deal with
wire rope arrangement except:
A. Preformed C. MPS
B. IWRC D. Lang lay

A

C

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11
Q

The normal density or work space
requirement to use in the design of a work room is _____
cubic feet per person.
A. 334 C. 424
B. 343 D. 442

A

C

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12
Q

All concrete or steel building with more than
_____ stories shall be advised to install passenger elevators.
A. 2 C. 4
B. 3 D. 5

A

B

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13
Q

The best material for brake drums is:
A. Aluminum C. Steel material
B. Cast iron D. Wrought iron

A

D

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14
Q

An elevator wire rope is subjected to:
A. Bending stress C. Tensile stress
B. Compressive stress D. Both A and C

A

D

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15
Q

How do you call a fixed crane consisting of a
supported vertical member from which extends a horizontal
swinging arm carrying a trolley hoist or other hoisting
mechanism?
A. Gantry crane C. Overhead crane
B. Jib crane D. Tower crane

A

B

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16
Q

The science of friction, lubrication and wear is called:
A Hydrology C. Kinetics
B. Hydrodynamics D. Tribology

A

D

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17
Q

The measure of fluid resistance when acted upon by an
external force.
A. Density C. Tackiness
B. Flash Point D. Viscosity

A

D

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18
Q

The absolute viscosity of the fluid
divided by its density expressed in same term of units:
A. Centistokes C. Light petroleum oil
B. Kinematic viscosity D. Petroff’s equation

A

B

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19
Q

All are functions of a lubricant, EXCEPT:
A. Acts as a coolant C. Lightens the load
B. Prevent adhesion D. Prevents corrosion

A

C

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20
Q

It is the property which enables oil to spread over and adhere to the surface of the bearing.
A. Fire point C. Pour point
B. Oiliness D. None of these

A

B

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21
Q

A very expensive white powdered mineral used as a dry
lubricant.
A. Boron Nitride C. Molybdenum Disulfide
B. Graphite D. Niobium Diselenide

A

A

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22
Q

The measure of density of oil.
A. API gravity C. Specific Gravity
B. Film Strength D. Adhesiveness

A

C

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23
Q

Water, even a few drops on molten
babbitt in a large bearing will cause:
A. Metal shrinks C. Rough surface
B. Non-fusion D. Cracks

A

D

24
Q

This is a bearing material with low
coefficient of friction, resistance to any chemical, selflubricated and can be utilized in a wide temperature range.
A. Cast iron C. Stainless steel
B. Chromium D. Teflon® (PTFE)

A

D

25
Q

Which one of the following journal bearings is made in two
halves and assembled in a special plumber block?
A. Solid bearings C. Split bearings
B. Adjustable slide bearing D. Self-aligning bushing

A

C

26
Q

The rule of thumb in journal
bearing design, the clearance ratio should be:
A. 0.01001 C. 0.0101
B. 0.0110 D. 0.0010

A

D

27
Q

The ability of the bearing material to entrap and sink
beneath the surface small foreign particles (dirt, debris,
dust, abrasive residuals) circulating in the lubricating oil.
A. Conformability C. Endurance limit stress
B. Embeddability D. ViscositY

A

B

28
Q

A less expensive bearing for light loads.
A. Babbittized bearing C. Roller bearing
B. Ball bearing D. Thrust bearing

A

B

29
Q

What do impact tests measure?
A. Compactness C. Plasticity
B. Ductility D. Toughness

A

D

30
Q

Steel balls of ball bearing are
manufactured by:
A. Casting C. Rolling
B. Cold heading D. Turning

A

B

31
Q

Ball bearings are provided with a cage to:
A. Facilitate slipping of balls
B. Maintain the balls at a fixed distance apart
C. Prevent the lubricant from flowing out
D. Reduce friction

A

B

32
Q

A roller bearing is utilized on _______ carrying capacity and
is better than ball bearing in this condition.
A. Heavy load C. Low load
B. High temperature load D. Reversing load

A

A

33
Q

The property of the bearing material to yield
and adopt its shape to that of journal.
A. Conformability C. Endurance limit stress
B. Embeddability D. Viscosity

A

A

34
Q

Special bearing used with high deflection.
A. Babbitt C. Ball
B. Roller D. Self-aligning

A

D

35
Q

The 300 series bearing is called:
A. Heavy series C. Medium series
B. Light series D. None of these

A

C

36
Q

Which of the following would cause hot bearings?
A. Dirt in oil C. Improper Oil
B. Improper Alignment D. All of these

A

D

37
Q

Which of the following is NOT a type of ball
bearing?
A. Deep-groove C. Self-aligning
B. Filling-slot D. Shallow groove

A

D

38
Q

Flat belt that is too tight will induce
undue strain on the bearing and the belt:
A. Life will be decreased C. Suffers
B. Life will be increased D. Will be sheared

A

A

39
Q

The tension ratio (F1/F2) of flat belt that gives maximum
power is:
A. 2 C. 4
B. 3 D. 5

A

B

40
Q

Flat leather belting not recommended
for use in speed in excess of:
A. 3,600 fpm C. 6,000 fpm
B. 4,800 fpm D. 7,200 fpm

A

C

41
Q

On high speed centrifugal blowers, it has
been observed that the arc of contact reduced from 180° at
rest to _____ in motion.
A. 110° C. 150°
B. 120° D. 160°

A

A

42
Q

The breaking strength of oak-tanned beltings
varies from 3 to more than:
A. 5 ksi C. 7 ksi
B. 6 ksi D. 9 ksi

A

B

43
Q

The movement of belt upon the face of rim
or outer surface of the driver and the driven pulleys within
the area of arc of contact.
A. Creep C. Interference
B. Crowning D. Slip

A

A

44
Q

The V-belt of E-type cross-sections are generally used in:
A. Automobiles C. Small Engines
B. Medium duty machine D. Heavy duty machine

A

D

45
Q

This effective pull is applied at the rim of the pulley and is
the force that produces work.
A. F1/F2 C. F1 – F2
B. F2/F1 D. F1 + F2

A

C

46
Q

The tension ratio of V-belt is:
A. 2 C. 4
B. 3 D. 5

A

D

47
Q

Which of the type of chain is used in
motorcycle?
A. Bush roller C. Pintle
B. Long D. Silent chain

A

A

48
Q

The recommended center distance of
sprockets should not be less than ____ times the diameter
of bigger sprocket.
A. 1.75 C. 1.5
B. 2 D. 2.25

A

C

49
Q

The recommended lubricant for chain
drive operation is:
A. Heavy grease C. Petroleum oil
B. Moly slip D. SAE 40W

A

C

50
Q

In roller chain drive, longer distance can
cause catenary tension in the operation; the ideal distance
is about:
A. 80 pitches C. 100 pitches
B. 90 pitches D. 120 pitches

A

A

51
Q

Which of the following is NOT a flexible link?
A. Connecting rod C. Belt
B. Chain D. Ropes

A

A

52
Q

It is ideal for maximum quietness in sprocket
drive operation to choose ____ or more teeth.
A. 21 C. 25
B. 23 D. 27

A

D

53
Q

The center-to-center distance between sprockets, as a rule
should not be less than ____ times the diameter of the larger
sprocket.
A. 1.25 C. 2.0
B. 1.5 D. 2.5

A

B

54
Q

The maximum number of teeth in any driven sprocket
should not exceed:
A. 100 C. 114
B. 108 D. 120

A

C

55
Q

Which of the following is also known as silent chain?
A. Block chain C. Inverted tooth chain
B. Double roller chain D. Roller chain

A

C

56
Q

The chain operates above oil level, while a disk is submerged
into the lower oil level.
A. Oil bath lubrication C. Oil-ring lubrication
B. Force-feed lubrication D. Drip lubrication

A

C

IKING 2 (10 decks)

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