QUIZZES

Question 1

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

Answer 1

C

Question 2

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

Answer 2

D

Question 3

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

Answer 3

C

Question 4

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

Answer 4

A

Question 5

(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

Answer 5

A

Question 6

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

Answer 6

B

Question 7

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

Answer 7

B

Question 8

) 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

Answer 8

c

Question 9

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

Answer 9

c

Question 10

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

Answer 10

C

Question 11

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

Answer 11

C

Question 12

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

Answer 12

B

Question 13

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

Answer 13

D

Question 14

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

Answer 14

D

Question 15

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

Answer 15

B

Question 16

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

Answer 16

D

Question 17

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

Answer 17

D

Question 18

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

Answer 18

B

Question 19

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

Answer 19

C

Question 20

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

Answer 20

B

Question 21

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

Answer 21

A

Question 22

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

Answer 22

C

Question 23

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

Answer 23

D

Question 24

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)

Answer 24

D

Question 25

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

Answer 25

C

Question 26

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

Answer 26

D

Question 27

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

Answer 27

B

Question 28

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

Answer 28

B

Question 29

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

Answer 29

D

Question 30

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

Answer 30

B

Question 31

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

Answer 31

B

Question 32

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

Answer 32

A

Question 33

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

Answer 33

A

Question 34

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

Answer 34

D

Question 35

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

Answer 35

C

Question 36

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

Answer 36

D

Question 37

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

Answer 37

D

Question 38

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

Answer 38

A

Question 39

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

Answer 39

B

Question 40

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

Answer 40

C

Question 41

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°

Answer 41

A

Question 42

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

Answer 42

B

Question 43

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

Answer 43

A

Question 44

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

Answer 44

D

Question 45

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

Answer 45

C

Question 46

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

Answer 46

D

Question 47

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

Answer 47

A

Question 48

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

Answer 48

C

Question 49

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

Answer 49

C

Question 50

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

Answer 50

A

Question 51

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

Answer 51

A

Question 52

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

Answer 52

D

Question 53

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

Answer 53

B

Question 54

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

Answer 54

C

Question 55

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

Answer 55

C

Question 56

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

Answer 56

C