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READINGS MD 1.3

Total questions: 108

Worksheet time: 54mins

Name
Class
Date
1.

_____ forces mean when their lines of action can be extended to meet to one point.

a)

concurrent

b)

centroids

c)

collinear

d)

resultants

2.

Imaginary formed by the intersection of the flanks of a thread when extended is called ___.

a)

sharp crest

b)

sharp root

c)

root apex

d)

all of these

3.

Permissible variation of the manufactured or machined dimensions is called:

a)

intolerance fits

b)

deviation

c)

allowable

d)

tolerance

4.

Molybdenum-chromium-nickel steel designation:

a)

SAE 48xx

b)

SAE 43xx

c)

SAE 56xx

d)

SAE 46xx

5.

_____ is also called strain hardening.

a)

work hardening

b)

quenching

c)

annealing

d)

normalizing

6.

A major alloy in tool steel.

a)

Cr

b)

FeN

c)

Cobalt

d)

Mn

7.

Distance measured perpendicular to the axis between the crest of the thread and the root of its mating thread in a thread assembly of screws.

a)

tolerance class

b)

crest truncation

c)

crest clearance

d)

tolerance limit

8.

Bearing surface that completely surrounds the journal is also called ____.

a)

offset bearing

b)

full bearing

c)

centrally loaded bearing

d)

babbitt learning

9.

The width of a tooth space exceeds the thickness of each of the engaging tooth on the pitch circle ______.

a)

allowance

b)

bottom land

c)

top land

d)

backlash

10.

_____ addition imparts resistance to atmospheric corrosion in steel, etc.

a)

aluminum bronze

b)

Manganese

c)

Copper

d)

bronze

11.

Should two equal and opposite collinear forces be added to the forces already in equilibrium, which of the following statement is true?

a)

Unbalanced of moment is maintained.

b)

Equilibrium is disturbed.

c)

Equilibrium is maintained.

d)

It increases an unbalanced situation.

12.

Iron based alloy containing 9-16% chromium.

a)

Mn Hadfield steel

b)

chrome-alloy steel

c)

stainless steel

d)

high chrome steel

13.

A rule of thumb, the speed limit of flywheel rim speed should be 6000 fpm for cast iron material and for cast steel flywheel rim at _____ meters/min.

a)

3050

b)

4500

c)

7000

d)

10000

14.

The distance between rivet centers nearest each other in adjacent rows is called _____.

a)

pitch

b)

back pitch

c)

margin

d)

diagonal pitch

15.

The purpose of lubrication is as mentioned, EXCEPT:

a)

to lighten the load

b)

prevent corrosion/adhesion

c)

prevent adhesion

d)

cool the moving elements

16.

The process of peening the joint portion immediately after the welding greatly improves the fusion structures, avoids possible cracking, avoids possible distortion, etc. Peening is also called _____ process at the same time.

a)

tempering

b)

martempering

c)

normalizing

d)

annealing

17.

Resultant of two or more component forces is called _____.

a)

component forces

b)

resultant

c)

component

d)

collinear forces

18.

For stable equipment foundation, the total combined engine, driven equipment and foundation center of gravity must be kept below the foundations top that usually about _____ times the usual total combined weight of the machine it is supposed to support.

a)

3 to 4

b)

3 to 7

c)

2 to 4

d)

3 to 5

19.

All associated with standard materials specification, EXCEPT:

a)

American Iron and Steel Institute

b)

Southeast Asia Iron and Steel Institute

c)

Society of Automotive Engineers

d)

American Society for Testing Materials

20.

It is ideal for maximum quietness in sprocket drive operation to choose ___ or more teeth.

a)

24

b)

18

c)

27

d)

21

21.

Shafting up to 3 inches in diameter is usually made from cold rolled steel and the common biggest diameter of cold rolled steel is ______.

a)

4 1/4 inches

b)

6 7/8 inches

c)

6 3/4 inches

d)

5 inches

22.

Designated pipe color used in communication:

a)

silver gray

b)

aluminum gray

c)

bare

d)

white

23.

Not part and in fact should not be used in the steel melting process.

a)

coke

b)

silicon

c)

zinc

d)

aluminum

24.

It is rigid piece which serves to transmit force from a piece to another piece or to cause/control motion.

a)

follower

b)

crank

c)

motion

d)

link

25.

Type of bolt commonly used in construction that is threaded at both ends.

a)

stud bolt

b)

acme thread

c)

hex bolt

d)

square threaded bolts

26.

The normal helix angles in helical gears is recommended in the range of degrees.

a)

less than 18

b)

20 to 35

c)

15 to 25

d)

20 to 30

27.

The ratio of stress acting on an elastic substance to the decrease in volume per unit volume is called which property?

a)

Bulk modulus

b)

Modulus of resilience

c)

elastic limit

d)

modulus of elasticity

28.

Rule of thumb in calculating the equipment foundation mass: it should be how many times the weight of the machinery it is supposed to support?

a)

3–5

b)

3–6

c)

3–9

d)

2–4

29.

The welding made along the edges of two parallel plates is called what?

a)

groove joint

b)

fillet joint

c)

edge joint

d)

corner joint

30.

Which class of material exhibits decreased electrical conductivity with increasing temperature?

a)

aluminum

b)

p-type semiconductors

c)

metals

d)

n-type semiconductors

31.

Cast iron flywheels are commonly designed with a factor of safety of:

a)

10 to 13

b)

10 to 12

c)

10 to 14

d)

8 to 13

32.

Stress relieving is also _____ for the purpose of reducing the internal stresses of steel material/metal.

a)

tempering

b)

normalizing

c)

all of these

d)

annealing

33.

A ridge of uniform section in the form of a helix cut around the circumference of a cylinder and advancing along the axis.

a)

thread roots

b)

helix thread

c)

screw threads

d)

chamfers

34.

Martensite (stainless steel) contains 4 to 26% Cr and a maximum of _____% nickel.

a)

2.5

b)

3.25

c)

3.5

d)

2.0

35.

The design stress and factor of safety are related in the following manner:

a)

design stress = ultimate stress/factor of safety

b)

ultimate stress = factor of safety/design

c)

design stress = factor of safety/times stress concentration factor

d)

none of these

36.

The material that can cut/wear substances subjected to:

a)

carbide

b)

abrasive

c)

tungsten

d)

vanadium

37.

A resulting factor that replace two or more forces acting together.

a)

vector

b)

couple

c)

resultant

d)

equilibrant

38.

Peculiar strength of the metal to resist being crushed.

a)

shear strength

b)

ultimate strength

c)

compressive strength

d)

elastic limit

39.

Which of the following is not a viscoelastic material?

a)

Teflon

b)

plastic

c)

all of these

d)

metal

40.

Alloy steel used in manufacturing bolts, studs, and tubing subjected to torsional stresses.

a)

AISI 3141

b)

AISI 2330

c)

AISI 4830

d)

AISI 4310

41.

Method of finishing/shaping a machine part of exceptionally high carbon or high chromium steel parts (or very hard material).

a)

using oxygen lancing

b)

machining using carbide insert

c)

using abrasive grinding

d)

machining high speed tool steel

42.

In a chain drive design for large speed reduction it is preferable to use a double reduction or compound type of transmission instead of single two sprockets transmission. Drives should be so designed that the angle between two tight chain strands does not exceed _____ degrees.

a)

45

b)

60

c)

55

d)

90

43.

Steel springs are made of high carbon steel, heat treated and/or cold work to a high elastic limit to get good elastic deflection. In general, the carbon content is at ______.

a)

0.40% or more

b)

0.65% or more

c)

0.50% or more

d)

0.66% or more

44.

The surface along the fillet curves or between the fillet radius of the two adjacent teeth of a gear.

a)

bottom land

b)

flank

c)

fillet

d)

top land

45.

Not adaptable to welding due to low tensile strength and poor ductility, etc.

a)

copper parts

b)

cast iron materials

c)

aluminum parts

d)

bronze parts

46.

Plus or minus tolerance can also be called as ______.

a)

total tolerance

b)

unilateral tolerance

c)

bilateral tolerance

d)

allowance

47.

The total machinery weight plus the foundation weight should be well distributed in the corresponding soil area which is enough to cause a bearing stress within the safe bearing capacity of the soil with a factor of safety of ______.

a)

4.5

b)

3

c)

4.2

d)

5.0

48.

______ is the plane perpendicular to the axial plane and to the pitch plane. In gears the parallel axes, and the plane of rotation coincide.

a)

tangent plane

b)

straight plane

c)

transverse

d)

reference

49.

The conical surface at the starting end of the thread is called ____.

a)

Pitch cone

b)

chamfer

c)

crest

d)

flute

50.

It is a good design practice for steel lineshafting to consider a limit to the linear deflection of _____ inch/foot length maximum.

a)

0.050

b)

0.010

c)

0.020

d)

0.060

51.

The five principal parts of a shaper are the table, tool, slide, base, ram and ______.

a)

column

b)

vise

c)

drive motor

d)

apron

52.

In designing gears for power transmission consider an efficiency of ______ as recommended.

a)

96% or more

b)

89% or more

c)

85% or more

d)

98% or more

53.

Progressive change of position of a body is called:

a)

acceleration

b)

momentum

c)

motion

d)

force

54.

The ideal thickness of the cutter at the pitch line for cutting helical gears should be _____ of the normal circular pitch.

a)

3/8

b)

¾

c)

½

d)

5/1

55.

In drilling soft materials use cutting angle as low as 40 degrees but for extremely hard material up to ______ degrees is recommended.

a)

80

b)

55

c)

75

d)

70

56.

The surface of the gear between the fillets of adjacent teeth is called____.

a)

bottom land

b)

flank

c)

topland

d)

flank of tooth

57.

An act of cutting out a piece of metal at a desired shape and size:

a)

broaching

b)

blanking

c)

slitting

d)

dinking

58.

A research agency handling assistance to all foundry, machine shop and metallurgical plant operation.

a)

MIRDC

b)

All of these

c)

DOST

d)

BOI

59.

The soldering material commonly applied for automobile radiator cores and roofing seams.

a)

15/85% tin and lead

b)

50/50% tin and lead

c)

45/55% tin and lead

d)

20/80% tin and lead

60.

A carbon content in the range of ____ in steel readily responds to heat treatment.

a)

0.35 to 0.40%C

b)

0.28 to 0.30%C

c)

0.18 to 0.25%C

d)

0.12 to 0.15%C

61.

Web is part of a drill and is usually thicker:

a)

beside the land

b)

nearing the shank

c)

close to the flute

d)

at the tip portion

62.

It is a symbol that the work surface should be machined-finished and usually indicated in the drawing and placed on the line that represents the surface to be machined.

a)

f

b)

15

c)

20

d)

FAQ

63.

Safety features that must be placed and maintained at Machine, Blacksmith, Welding and foundry Shops.

a)

walkway guide

b)

all of these

c)

safety notices in markers/boards

d)

safety goggles

64.

Deflection of a beam is:

a)

proportional to the modulus of elasticity and moment of inertia

b)

proportional to the load imposed and inversely to the length squared

c)

inversely proportional to the modulus of elasticity and moment of inertia

d)

inversely proportional to the weight-imposed times the length.

65.

To teach professional subjects in mechanical engineering course, he must be a duly licensed _______ or a Master's degree or Doctorate degree holder in Mechanical Engineering.

a)

ME and CPM

b)

CPM

c)

PME

d)

ME

66.

The amount by which the dedendum in a given gear/pinion exceeds the addendum of its mating pinion/gear. Also the radial distance between the top of a tooth and the bottom of the mating tooth space.

a)

tip relief

b)

top land

c)

clearance

d)

space

67.

Axially located rectangular groove in a hub and shaft.

a)

keyseat

b)

cotter pin seat

c)

flute

d)

set screw point

68.

_____ indicates how many times a volume of material is heavier than an equal volume of water.

a)

specific gravity

b)

specific volume

c)

specific weight

d)

specific density

69.

Commonly used/produced screws/ bolts/nuts/ and for engineering applications is a series.

a)

UNC

b)

ANSI

c)

withworth

d)

UNF

70.

Avoidance of vibration in equipment or machinery foundations, a mass of weight equal to ______ times the forces needed.

a)

10 to 20

b)

8 to 15

c)

15 to 20

d)

8 to 10

71.

___________ is the name applied to reciprocating circular motion as that of a pendulum.

a)

intermittent motion

b)

reciprocating motion

c)

momentum

d)

oscillation

72.

Nickel-chromium-molybdenum steel designation, SAE _____.

a)

SAE51xx

b)

SAE74xx

c)

SAE49xx

d)

SAE64xx

73.

Moment of inertia is also called:

a)

modulus of elasticity

b)

weep strength

c)

none of these

d)

radius of gyration

74.

It is hardening treating whereby a cast metal is being heated to a very high temperature then suddenly subjected to rapid cooling to improve hardenability or wear resistance is called:

a)

annealing

b)

normalizing

c)

tempering

d)

quenching

75.

Surface connecting the crest and roots of the screw thread

a)

lead angle

b)

length of engagement

c)

top land

d)

flank

76.

A good general-purpose deoxidizer and promotes fine grain in steel.

a)

copper

b)

magnesium

c)

molybdenum

d)

silicon

77.

Treatment process that produces a residual compressive stress at the surface (which occupy more volume) and residual tension on the inside that results in considerable increase in fatigue strength for members on torsional/bending.

a)

heavy oil quenching

b)

partial quenching

c)

quenching

d)

shallow quenching

78.

The flux that should be avoided in soldering electrical connection or commutator wires as it tends to corrode the connections.

a)

sal ammoniac

b)

zinc chloride

c)

stearin

d)

acid fluxes

79.

The characteristic of tool steel to sustain shocks and major impacts is due to its:

a)

toughness

b)

stiffness

c)

ductility

d)

machinability

80.

Bevel gears subjected to corrosion and lightly loaded are usually made of ____.

a)

bronze

b)

brass

c)

all of these

d)

duralumin

81.

As a rule of thumb, the depth of foundation could be about 3.2 to ____ times the engine stroke.

a)

4.20

b)

4.0

c)

3.40

d)

3.80

82.

The application of electrical current to the corrosion circuit to counter the corrosion reaction is called:

a)

cathodic protection

b)

sacrificial anodes method

c)

chemical corrosion process

d)

galvanic action

83.

A major component of cast steel

a)

silicon

b)

iron

c)

manganese

d)

chromium

84.

Normally cast iron contains 2% carbon or more and silicon in the range of ____%.

a)

1–3

b)

2 to 4

c)

2–3

d)

1 to 6

85.

If a set of spur gears are made, installed and lubricated properly, they normally may be subjected to failures like:

a)

tooth spalling

b)

tooth pending

c)

pitting

d)

shearing

86.

From experience specify the conventional limit of flywheel operations to be at 6000 ft/min for cast iron and ____ ft/min for cast steel.

a)

7000

b)

8000

c)

10000

d)

12000

87.

What equation to use in computing the acceleration of the center of a rolling ball with a diameter of 8 inches.

a)

0

b)

rw2rw^2

c)

w2/rw^2/r

d)

V2/rV^2/r

88.

In a cutting tool the cutting end can also be generally called ____.

a)

end cutting edge

b)

nose

c)

back rake

d)

side rake

89.

What factors can modify the recommended cutting speed of known work piece?

a)

rough cutting of work piece

b)

modify the shape of the cutting tools

c)

use correctly shaped cutting tools

d)

depth of cut

90.

The material for engine radiator is usually made of ______.

a)

yellow brass

b)

silicon brass

c)

admiralty brass

d)

navy brass

91.

What type of leather belting should be used at an ambient temperature above 140° and possible acid liquid coming in contact with the belt?

a)

mineral tanned

b)

combination of oak

c)

none of these

d)

Oak tanned

92.

A machine shop equipment that can flatten horizontally, vertically or angular plane.

a)

shaper machine

b)

welding machine

c)

drill machine

d)

power saw

93.

A petroleum by-product used as electrodes in an electric arc furnace melting operation.

a)

anthracite coke

b)

foundry coke

c)

graphite electrodes

d)

bituminous coke

94.

An example of rectilinear translation:

a)

locomotive wheels

b)

rack gear

c)

piston of an engine

d)

jack

95.

________ does not affect the tensile strength of steel.

a)

Sulphur

b)

cobalt

c)

phosphorous

d)

baron

96.

Which of the following is an unsafe condition in operating a lathe machine?

a)

wearing denim pants/safety shoes

b)

wearing a canvas apron

c)

operating with safety gloves

d)

wearing safety goggles/hearing aid

97.

Relief angles of single-point cutting test in cutting mild steel, cast iron and other average work as recommended should be in the ranges of ____ degrees for high speed tools.

a)

8 to 12

b)

10 to 15

c)

5 to 7

d)

12 to 16

98.

Tap not used for cutting threads ____.

a)

tapping tap

b)

bottoming tap

c)

plugging tap

d)

taper tip

99.

Alloy steel axle under repeated load/stress will eventually fail if the load/stress is above the endurance for the steel under consideration. The endurance limit of the steel is therefore:

a)

equal to the allowable stress at the module of elasticity

b)

equal to half the ultimate strength

c)

equal to the module of elasticity

d)

equal to 80% of the elastic limit

100.

All terms and abbreviations deal with wire rope arrangement except this ____ which deals with wire rope material strength.

a)

preformed

b)

IWRC

c)

Mps

d)

lang lay

101.

Mirror finish has surfaces fineness of ____ rms.

a)

1

b)

2 to 8

c)

1 to 3

d)

2 to 5

102.

Chromium steel (to include heat and corrosion resistant) designation.

a)

SAE5xxx

b)

SAE514xx

c)

SAE61xx

d)

SAE3xxx

103.

Non-metallic material for high melting temperature being used as furnace lining.

a)

quartz bricks

b)

refractories

c)

silica sand

d)

dolomite clay bricks

104.

For economical cost in the manufacturing large worm gears the following materials are usually applied.

a)

bronze rim with cast steel spider

b)

cast iron rim with bronze spider

c)

cast steel rim with brass spider

d)

alloyed aluminum rim with cast iron spider

105.

In greater quantity, this element is harmful to the molten ferrous metal.

a)

silicon

b)

aluminum

c)

oxides

d)

sulfur

106.

____ thread is used where the thread requires great strength and usually cut square on one side and slanting on the other side.

a)

janno

b)

buttress

c)

square

d)

double

107.

Internal stress exerted by the fibers to resist the action of outside force is called ___.

a)

shearing stress

b)

tensile stress

c)

ultimate stress

d)

compressive stress

108.

One of the following materials is not mentioned for wire rope pulley/sheave applications.

a)

plastic

b)

iron

c)

paper

d)

copper alloy