CDC 3E051A Vol.3 Unit 1

1. How many conductors must a clamp-on ammeter encircle to obtain an accurate current reading ?

A) One
B) Three
C) Two
D) Four

Which measurement determines the lenght of a screwdriver ?

A) Lenght of the blade.
B) Lenght of the shank.
C) Lenght of the tip.
D) Overall lenght.

When using an adjustable wrench, why do you not apply a pulling force to the adjustable jaw ?

A) You could break you wrist.
B) You could break you fingers.
C) The wrench is likely to bend.
D) The wrench is likely to slip.

What tools should you use to cut openings when installing devices in finished walls ?

A) Jab saw.
B) Compass saw.
C) Ripsaw.
D) Crosscut saw.

How is a hacksaw blade installed ?

A) Users preference.
B) Teeth facing towards the handle.
C) Teeth facing away from handle.
D) Depends on material that is being cut.

What conduit bender is normally used for 1/2" and 3/4" EMT ?

A) Hickey bender.
B) One-shot bender.
C) Hydraulic bender.
D) Electric bender.

How do you know when a bit is properly tightened in a cordless drill ?

A) You will hear a clicking sound.
B) Until it doesn't move.
C) Use a wrench to tighten the chuck.
D) You tighten it 1/2 turn past snug.

What is the largest American standard wire gauge (AWG) size electrical wire ?

A) 2/0.
B) 4/0.
C) 1/0.
D) 3/0.

The kcmil size range for conductors is ?

A) 250 to 2,500.
B) 200 to 2,000.
C) 100 to 1,000.
D) 250 to 2,000.

Pre-punched disks in a box that can be removed easily to permit conduit or cable connectors to be installed are called

A) connector disks.
B) blancks.
C) pryouts.
D) knockouts.

What is the purpose of a raised box cover ?

A) Provides added interior space as well as a cover for the box.
B) Provides space for three additional devices.
C) Allows the box to be mounted five eighths of an inch behind the wall surface.
D) Allows for installation of a thicker wall surface after the box is mounted.

When you are connecting rigid conduit to boxes, what is/are required for circuits above 250 volts ?

A) One locknut and a bushing.
B) Two bushings and a locknut.
C) Two bushings and two locknuts.
D) Two locknuts and a bushing.

Which condition below is not allowed ?

A) Using flexible metal tubing in lengths less than 6 feet.
B) Using liquid-tight flexible metal conduit in lengths greater than 6 feet.
C) Using rigid metal conduit in lengths greater than 6 feet.
D) Using flexible metal tubing in lenghts greater than 6 feet.

Which ratings are always found on switches ?

A) Amperes and volts.
B) Amperes and watts.
C) Volts and watts.
D) Resistance and hertz.

What does the label TR signify on duplex receptacles ?

A) Tamper resistant.
B) Training regulation.
C) Test resistor.
D) Test regularly.