Torque Level 1 Lessons 1-5

During the use of Torque and Angle Electronic torque wrenches, match the percentage of target torque to the correct color of the user notification LED lamp. Within 4% of target torque (buzzer sounds when target is reached) Within 10% of target torque 4% beyond target torque (rapid "alarm" buzzer sounds)

1. green 2. yellow 3. red

Using the formula for torque, how much force must be applied to a two foot long torque wrench to achieve 250 foot-pounds of torque?

125 lbs

The accuracy of a Micrometer Adjustable (Clicker) Torque Wrench ode is plus/minus ? (%) when used in a CW mode from 20% to 100% of full scale. Select one: a. 1 b. 2 c. 3 d. 4

3

A 250 foot-pound wrench is permitted to be set at 5 foot-pounds. Select one: True False

False

Concerning Torque and Angle Electronic torque wrenches, Models 1002TAA and 2503TAA will both measure 125 foot-pound. Select one: True False

False

Friction between the threads (dirty threads) does not affect the torque value. T or F

False

It is permissible to leave an adjustable (clicker style) torque wrench wound up during storage. Select one: True False

False

Metric fasteners are commonly used throughout the world. The most common metric fastener is the fine thread. Select one: True False

False

The length of a bolt is determined by measuring overall length. Select one: True False

False

The standard Computorq 3 Electronic torque wrench with an accuracy reading of (20% - 100% of full scale) is the same for CW and CCW. Select one: True False

False

When using a nut, the grade or hardness does not matter as long as it is the proper size for the bolt. Select one: True False

False

A UNC fastener has fewer threads per inch than the same size UNF fastener. Select one: True False

True

Clamping force is created by the spring action of the bolt. T or F

True

Dial wrenches usually have a fixed, plain drive. Select one: True False

True

In proper use of a torque wrench, force should be applied in a pulling motion, toward the user. Select one: True False

True

It is recommended that all click wrenches be stored at their lowest setting on the scale. Select one: True False

True

On a dial wrench, always check the dial needle to make sure it is set at "O". Select one: True False

True

The formula for torque is: Torque = Length × Force. T or F

True

The greater the tension the greater the clamping force. T or F

True

Torque is expressed in length and weight units. T or F

True

Torque screwdrivers are well-suited for precision work. Select one: True False

True

Transverse loading is the cycle fatigue on a bolt over time with forces not only applied in the typical straight-on directions, but especially in the sideways or perpendicular direction. Select one: True False

True

What is the English Range of a Comfort Grip Micrometer Adjustable Torque Wrench, Model 1501MRPH? Select one: a. 20-150 In-Lb b. 20-150 Ft-Lb c. 30-250 In-Lb d. 30-150 Ft-Lb

a. 20-150 In-Lb

The label on the 1,200 amp breaker requires ? inch-pound of torque if using a T1200NB3 terminal. Click on the image to view a larger version of it. Select one: a. 275 b. 300 c. 400 d. 450

a. 275

The ? is a national testing organization responsible for rating very high grade bolts. Select one: a. American Society for Testing and Materials b. American Standards for Testing Materials c. International Society for Testing Materials d. National Electrical Testing Association

a. American Society for Testing and Materials

A 3/4 - 10 fastener pitch is an example of what thread type? Select one: a. Coarse (UNC) b. Fine (UNF) c. Grade 5 d. Metric

a. Coarse (UNC)

What type of torque measuring design does the metal handle click type torque dual scale utilize? Select one: a. Spring Loaded Pull down Lock Ring b. Strain Gauge c. Torsion Beam d. T-Type Transducer

a. Spring Loaded Pull down Lock Ring

When using a torque wrench ? . Select one: a. always pull the wrench toward you b. always push the wrench away from you c. it does not matter if you push or pull the torque wrench d. use a very quick motion

a. always pull the wrench toward you

The ? style was the first type of torque wrench invented and commercially sold? Select one: a. beam b. clicker c. dial d. slip

a. beam

A breakaway bolt with installation instructions is typically used during the installation of ? . Select one: a. bus duct joints b. cable terminations c. cable tray connections d. switchboard bus bars

a. bus duct joints

In the application of torque to a fastener, it is important that the bolt is not stretched beyond its ? phase. a. elastic b. rundown c. yield d. a. or b. e. a. or c.

a. elastic

A successful and proper torque application may be described as an application of enough ? to a fastener so it will have enough "spring action" to hold the joint together, without stretching it too much so that the bolt will ? and no longer spring back. Select one: a. force / yield b. power / yield c. strength / be very tight d. torque / freeze

a. force / yield

Metric bolts are marked on the head with ? . Select one: a. property class b. size in mm c. strength grade d. they are not marked

a. property class

The 3/8" drive model of the Computorq 3 Electronic torque wrench has a ? Kg-Cm rating. Select one: a. 27.6 - 276 b. 138 - 1382 c. 300 - 3000 d. 345 - 3456

b. 138 - 1382

Digital torque wrenches indicate a plus/minus ? % accuracy. Select one: a. 1 b. 2 c. 4 d. 5

b. 2

The rule of thumb to use when remembering how the number of hash marks relates to the grade of the bolt is to simply add ? to the number of hash marks and that is the grade for the bolt. Select one: a. 1 b. 2 c. 3 d. 4

b. 2

The Computorq 3 will operate using ? different torque units? Select one: a. 3 b. 4 c. 5 d. 6

b. 4

Determine the ultimate tensile strength and the yield point of this bolt. (pic) a. 80 MPa / 48 MPa b. 800 MPa / 640 MPa c. 8000 MPa / 6400 MPa d. 8800 MPa / 5280 MPa

b. 800 MPa / 640 MPa

To prevent an over-torque condition, the operator has to STOP between which of the phases listed below? Select one: a. Elastic and alignment phases b. Elastic and plastic phases c. Plastic and rundown phases d. Rundown and alignment phases

b. Elastic and plastic phases

A 5/16 - 24 fastener pitch is an example of what thread type? Select one: a. Coarse (UNC) b. Fine (UNF) c. Grade 8 d. Metric

b. Fine (UNF)

Which of the following is not part of the phases of the fastening process? Select one: a. Elastic phase b. Friction phase c. Plastic phase d. Rundown phase

b. Friction phase

If a bolt has three hash marks on the head, it is what grade of bolt? Select one: a. Grade 3 b. Grade 5 c. Grade 6 d. Metric

b. Grade 5

Which one of the following choices is not an advantage of breakaway bolt heads on a bus duct installation? Select one: a. Less man-hours of installation b. Lower resistance c. No chance to over-torque d. No special torque wrench required

b. Lower resistance

Which of the following is not a primary factor that affects the application of torque? Select one: a. Friction (condition of parts) b. Temperature c. The operator d. The torque wrench

b. Temperature

Where a tightening torque is indicated as a numerical value on equipment or in the installation instructions provided by the manufacturer, a ? torque tool shall be used to achieve the indicated torque value unless the equipment manufacturer has provided installation instructions for an alternative method of achieving the required torque. Select one: a. approved b. calibrated c. industry recognized d. listed

b. calibrated

The ? style is the most common type of torque wrench used today. Select one: a. beam b. clicker c. dial d. slip

b. clicker

A ? torque wrench uses a ball detent and spring. Select one: a. beam style b. clicker style c. dial style d. electronic style

b. clicker style

One of the downsides of ? threads is the susceptibility to galling. Select one: a. coarse b. fine c. left-handed d. metric

b. fine

An ISO bolt thread size is determined by measuring ? . Select one: a. distance in inches from crest to root of the bolt b. mm from crest to crest c. mm per flank d. threads per inch

b. mm from crest to crest

The shear force is the ? working against a bolt in a perpendicular direction. Typically the shear strength of a steel fastener is about 0.6 times the tensile strength. Select one: a. lateral b. pressure c. strength d. yield

b. pressure

A ? is a torque device with a planetary gear system used to create output revolutions greater than the input revolutions applied. Select one: a. torque divider b. torque multiplier c. torque quad-4x d. torque rev-4x

b. torque multiplier

When converting In-Oz to In-Lb what multiplication factor is required? Select one: a. 6.25 b. 0.625 c. 0.0625 d. 0.00625

c. 0.0625

What is the multiplication factor to convert Nm to Foot-pound? Select one: a. 0.3677 b. 0.6737 c. 0.7376 d. 0.7637

c. 0.7376

The torque-tension graphic illustrates the bolt tension difference of ? pounds between dirty and clean threads when applying the torque of 140 foot-pound. a. 0 b. 6,000 c. 10,000 d. 18,000

c. 10,000

When using a 5/16" bolt in a Pow-R-Line Switchboard®, the amount of torque required is ? inch-pounds. Click on the image to view a larger version of it. Select one: a. 30 b. 65 c. 130 d. 240

c. 130

The Computorq II Electronic torque wrench model ? uses a half-inch socket and is rated at 25-250 foot-pounds. Select one: a. 501CI-II b. 2502CI-II c. 2503CF-II d. 2504CF-II

c. 2503CF-II

For maximum accuracy, a torque wrench should only be used for ranges between ? % and ? % of its maximum rated value. Select one: a. 10 / 50 b. 20 / 75 c. 30 / 80 d. 80 / 100

c. 30 / 80

How much does Dial Torque Wrench-Single Scale, model 2005LDFESS weigh (including 5-piece handle)? Select one: a. 10 lbs b. 30 lbs c. 47 lbs d. 61 lbs

c. 47 lbs

Currently, the UTS standard specifies a ? degree flank on all threads today. Select one: a. 55 b. 57 c. 60 d. 63

c. 60

Static breakaway torque is typically ? of the total torque value. Select one: a. 50% b. 75% c. 90% d. 100%

c. 90%

A peak hold needle feature is a key advantage to what type of torque wrench? Select one: a. Beam Style b. Clicker Style c. Dial Style d. Slip

c. Dial Style

From the list below, select three disadvantages of the torque screwdriver?I. Have a limited maximum torqueII. Limited to one scaleIII. Need to be calibrated oftenIV. Not suitable for precision workV. Relatively expensive considering their limited torque range Select one: a. I., II., III. b. I., II., VI. c. I., II., V. d. II., IV., V.

c. I., II., V.

I. Always wind down to the lowest setting before storage.II. Keep all torque instruments clean and dry.III. Make sure needles do not contact dial face or crystal.IV. Remove batteriesV. When not in use, store the tool in the protective box. Select one: a. I., II., III. b. II., III., IV. c. II., III., V. d. II., IV., V.

c. II., III., V.

Is it OK to use an oversized torque wrench to break loose small tight bolts? Select one: a. Yes b. Only in low torque operations c. Never

c. Never

The label on the 1,200 amp breaker allows four 4/0 AWG - 500 kcmil on terminal catalog number ? . Click on the image to view a larger version of it. Select one: a. TA700NB1 b. TA1000NB1 c. TA1200NB1 d. TA1201NB1

c. TA1200NB1

The torque wrench shown is a(n) ? . Select one: a. Torque Screwdriver - Adjustable b. Torque Screwdriver - Macro-Adjustable c. Torque Screwdriver - Micro-Adjustable d. Torque Screwdriver - Nonadjustable

c. Torque Screwdriver - Micro-Adjustable

What type of torque measuring design does the Dial Torque Wrench-Dual Scale utilize? Select one: a. Spring Loaded Pull down Lock Ring b. Strain Gauge c. Torsion Beam d. T-Type Transducer

c. Torsion Beam

When stretched, the fastener tries to ? . a. become plastic b. break c. maintain its original size d. overcome friction

c. maintain its original size

SAE bolts are marked on the head with ? . Select one: a. property class b. size in MM c. strength grade d. they are not marked

c. strength grade

The display on the Electronic Dial Torque Wrench (ED) can be turned ? degrees. Select one: a. 30 b. 45 c. 90 d. 180

d. 180

Using the table shown, and when using a 3/8" bolt in a Pow-R-Line Switchboard® is tightened, the amount of torque required is ? inch-pounds. Click on the image to view a larger version of it. Select one: a. 20.0 b. 65 c. 130 d. 240

d. 240

A Computorq II Electronic torque wrench rated at 60-600 foot-pound uses a ? socket drive. Select one: a. 1/4 in. b. 3/8 in. c. 1/2 in. d. 3/4 in. e. 1 in.

d. 3/4 in.

How many torque values will the Computorq II Electronic torque wrench store in memory? Select one: a. 250 b. 1000 c. 2500 d. 4000

d. 4000

When terminating 3/0 AWG to the 200-amp breaker using slotted head screws, the torque requirement is ? inch-pound. Click on the image to view a larger version of it. Select one: a. 35 b. 40 c. 45 d. 50

d. 50

What is the root diameter (coarse) for a M8 bolt? Select one: a. 0.75 b. 1.25 c. 5.917 d. 6.647

d. 6.647

What model of the Electronic Dial Torque Wrench (ED) is rated for 60-600 In-Lb? Select one: a. 501ED b. 2502ED c. 6001ED d. 6002ED

d. 6002ED

What length of cheater bar is needed to obtain 300 foot-pounds from a 250 foot-pound torque wrench? Select one: a. 2 feet b. 3 feet c. 5 feet d. A cheater bar should never be used on a torque wrench

d. A cheater bar should never be used on a torque wrench

Why is torque important? a. Proper torque insures correct clamping force. b. Proper torque maintains joint and fastener reliability and product safety. c. Proper torque protects the fastener from failure. d. All of the above.

d. All of the above.

Determine the grade of the bolt. Select one: a. Grade 2 b. Grade 3 c. Grade 5 d. Grade 8

d. Grade 8

MPa is the measurement used to classify the tensile strength of what type of fastener? Select one: a. Grade 2 b. Grade 5 c. Grade 8 d. Metric

d. Metric

In using the Computorq II Electronic torque wrench, what are the two selectable modes of operation? Select one: a. Ft-Lb / Nm b. Hold and follow c. Notification / silent d. Peak Hold and Track

d. Peak Hold and Track

An SAE bolt grade is an indicator of ? . Select one: a. hardness b. strength c. weight d. a. or b.

d. a. or b.

An insufficient level of torque can ? . Select one: a. burn off the conductor insulation b. cause excessive heat at the termination c. create a high resistance d. all of the above

d. all of the above

Snap-On Tools recommends that a torque wrench should be recalibrated ? . Select one: a. after every use b. every 5,000 cycles c. once a year d. b. and c.

d. b. and c.

A(n) ? torque wrench uses a strain gauge to measure torque? Select one: a. beam style b. clicker style c. dial style d. electronic style

d. electronic style

The total force required in a torque application is comprised of two distinct regions. They are the ? torque and the ? torque. Select one: a. dynamic breakaway / static applied b. friction / alignment c. rundown phase / elastic phase d. static breakaway / dynamic applied

d. static breakaway / dynamic applied

An SAE bolt thread size is determined by measuring ? . Select one: a. distance in inches from crest to root of the bolt b. mm from crest to crest c. mm per flank d. threads per inch

d. threads per inch

Breakaway torque is affected by ? . Select one: a. friction under the head of the bolt b. metallurgy c. thread friction d. a. or b. e. a. or c.

e. a. or c.

The Comfort Grip Micrometer Adjustable Torque Wrench includes a Kg-Cm scale. Select one: True False

false

The Dial Torque Wrench-Single Scale, Model 10005LDFESS, is a "T" style wrench with 1" drive female head that can be used with a torque multiplier. Select one: True False

false

The Information Sheet of Lesson 5 has an associated "Bolted Joints" table as shown in this illustration, and uses two different types of bolted connections referred to as Figures 1 and 2. After reviewing the table and Figures 1 and 2 carefully; where the joined bus bars are "copper to aluminum" bus bar and a connection is made, the connection uses only the Figure 1 configuration and requires a lock washer. Click on the image to view a larger version of it. Select one: True False

false

The Micrometer Adjustable (Clicker) Torque Wrench, Model 3403NMRMHSS, is a 1/2" square drive, dual-scale torque wrench. Select one: True False

false

The electric signaling models of a Dial Torque Wrenches-Dual Scale is available in a 3/8" drive. Select one: True False

false

This is an image of the Comfort Grip Micrometer Adjustable Torque Wrench. Select one: True False

false

Identify the hardware needed for a bus connection.

pic

Indicate the proper order of tightening bolts. Use a clockwise crisscross pattern starting after number 1, and ending with number 5.

pic

Match each tool to its correct name.

pic

Match the correct percentage of applied torque for head friction, thread friction, and bolt stretch.

pic

Match the following images to their correct term

pic

Match the following images to their correct term.

pic

Match each Grade of bolt to the bolt head shown in the graphic.

picture

A connection should be tightened until the Belleville washer flattens. Select one: True False

true

A preset right angle torque wrench manufactured by CDI is commonly called a "Torky." This torque wrench may be preset to a torque value for small repetitive work, such as receptacle or switch terminations. Select one: True False

true

Concerning Torque and Angle Electronic torque wrenches, only Model 2503TAA will measure 150 Nm. Select one: True False

true

In the picture and in real world practices to ensure quality, as each bolted joint received an initial torque application, it was marked with a blue grease marker. Then, a second check for the correct torque level was performed, and the joint was marked with a red marker. Click on the image to view a larger version of it. Select one: True False

true

The Dial Torque Wrenches-Dual Scale, Model 751LDIN, is calibrated in both CW and CCW direction. Select one: True False

true

The Electronic Dial Torque Wrench (ED) is resistant to a majority of chemicals used in industrial environments. Select one: True False

true

The label on the 1,200 amp breaker states that the conductor material can only be copper for the T1200NB3 terminal. T or F

true

Torque screwdrivers generally have a cam-over feature. Select one: True False

true