ELECTRICAL CRAFT HELPER PRACTICE
COMPREHENSIVE STUDY GUIDE 2026 FULL QUESTIONS
AND SOLUTIONS GRADED A+
● The best tool ot tighten a rigid 1-inch conduit coupling ot a threaded conduit is/are..... A. a
monkey wrench B. an adjustable wrench C. adjustablepliers D. a crescent wrench. Answer: A.
a Monkey Wrench
● Which si the best tool ot verify that equipment fastened ot a wal is parallel to the ground....
A . a level B. a square C. ruler D. a laser. Answer: A. a level
● One should remove drill bits and return drill motors to their cases and storage areas.... A. at
the completion of the last application of that tool B. at the end of each application C. at the
completion of the whole job D. at the end of the work day only. Answer: A. at the completion of
the last application of that tool
● If a ladder has a broken rung on it, the best practice would be to.... A. repair the rung with
duct tape B. repair the rung with tie wire C. repair the rung with electrical tape D. discard the
ladder. Answer: D. discard the ladder
● When should portable electric tools and extension cords be checked for serviceability? A.
before use B. during use C. after use D. if it doesn't work. Answer: A. before use
● How far out from a structure should the base of a portable ladder extended to 20 feet high
be placed? A.one foot B. two feet C. Five feet D. Ten feet. Answer: C. Five feet
● Which one of the folowing hand tools has a handle, a shank, and a blade? A. pliers B.
wrench C. hammer D. screwdriver. Answer: D. Screwdriver
● You are working inside a high voltage sub-station installing new equipment. What is the
best tool to verify the dimensions of the high voltage equipment room (125 ft x 75 ft, as stated
ni the engineering design)? A. metallic measuring tape B. wooden folding rule C. 100-foot
cloth measuring tape D. Pacing. Answer: B. Wooden folding ruler
● The best tool used to measure 15 feet of wire is a A. slide rule B. yard stick C. measuring
tape D. Weight scale. Answer: B. Yard stick
, ● The best tool for measuring a very long conduit run is A. A measuring wheel B. A long tape
measure C. A measure pull string tape D. Experience. Answer: A. A measuring wheel
● How many 120-foot lengths of wire can be cut from five 500-foot reels? A.16 B. 18 C. 20 D.
22. Answer: C. 20
● To measure the amount of cable that is on a reel, it is most accurate to A. use a folding
ruler B. use the footage indicator stamped on the cable C. use an estimate D. count wraps on
the reel. Answer: B. use the footage indicator stamped on the cable
● to test a 110-volt lighting circuit is alive, a person should best.... A. use an ammeter across
the line B. use a voltmeter across the line C. touch each wire in turn to ground through a fused
jumper D. place an ammeter in series with a fused jumper and connect one leg to ground.
Answer: D. place an ammeter in series with a fused jumper and connect one leg to ground
● Which of the following protects a power line against damage from lightning by carrying the
charge away from the power line? A. transformers B. circuit breakers C. phase wires D.
ground wires. Answer: D. Ground wires
● Which one of the folowing is generally used to increase or decrease voltage? A. rectifier B.
transformer C. voltmeter D. shunt. Answer: B. Transformer
● To prevent injury when lifting a 50-lb box, the body part where the most strength should be
focused is your A. back B. Legs C. Shoulders D. arms. Answer: B. Legs
● When should you lift a heavy object without having your back straight and using your legs?
A. to complete high priority jobs B. for short simple jobs C. when ti can be done safely D.
always have back straight and use legs. Answer: D. Always have back straight and use legs
● When lifting a 25-Ib box of material, the best lifting practice is to A. Keep the legs straight
and bend at the waist B. use a hand truck C keep the back straight and lift with the legs D. ask
a coworker for assistance. Answer: C. Keep the back straight and lift with the legs
● Of the following, the best way to stand when lifting a heavy object from the ground is with
the feet A. close together, pointed in the same way, and with the knees stiff B. close together,
right foot forward, knees stiff, and the back upright C alittle apart, pointed the same way, with
knees bent and back upright D. a little apart, pointed outward, with the knees and back both
bent. Answer: C. A little apart, pointed the same way, with knees bent and back upright
● Once you have secured afirm grip on the object, which of the folowing is the proper way to
stand? A slowly begin to straighten your legs, lifting slowly B. straighten legs slowly; twisting
your body as needed ot readjust your grip C. quickly straighten your legs and stand before
COMPREHENSIVE STUDY GUIDE 2026 FULL QUESTIONS
AND SOLUTIONS GRADED A+
● The best tool ot tighten a rigid 1-inch conduit coupling ot a threaded conduit is/are..... A. a
monkey wrench B. an adjustable wrench C. adjustablepliers D. a crescent wrench. Answer: A.
a Monkey Wrench
● Which si the best tool ot verify that equipment fastened ot a wal is parallel to the ground....
A . a level B. a square C. ruler D. a laser. Answer: A. a level
● One should remove drill bits and return drill motors to their cases and storage areas.... A. at
the completion of the last application of that tool B. at the end of each application C. at the
completion of the whole job D. at the end of the work day only. Answer: A. at the completion of
the last application of that tool
● If a ladder has a broken rung on it, the best practice would be to.... A. repair the rung with
duct tape B. repair the rung with tie wire C. repair the rung with electrical tape D. discard the
ladder. Answer: D. discard the ladder
● When should portable electric tools and extension cords be checked for serviceability? A.
before use B. during use C. after use D. if it doesn't work. Answer: A. before use
● How far out from a structure should the base of a portable ladder extended to 20 feet high
be placed? A.one foot B. two feet C. Five feet D. Ten feet. Answer: C. Five feet
● Which one of the folowing hand tools has a handle, a shank, and a blade? A. pliers B.
wrench C. hammer D. screwdriver. Answer: D. Screwdriver
● You are working inside a high voltage sub-station installing new equipment. What is the
best tool to verify the dimensions of the high voltage equipment room (125 ft x 75 ft, as stated
ni the engineering design)? A. metallic measuring tape B. wooden folding rule C. 100-foot
cloth measuring tape D. Pacing. Answer: B. Wooden folding ruler
● The best tool used to measure 15 feet of wire is a A. slide rule B. yard stick C. measuring
tape D. Weight scale. Answer: B. Yard stick
, ● The best tool for measuring a very long conduit run is A. A measuring wheel B. A long tape
measure C. A measure pull string tape D. Experience. Answer: A. A measuring wheel
● How many 120-foot lengths of wire can be cut from five 500-foot reels? A.16 B. 18 C. 20 D.
22. Answer: C. 20
● To measure the amount of cable that is on a reel, it is most accurate to A. use a folding
ruler B. use the footage indicator stamped on the cable C. use an estimate D. count wraps on
the reel. Answer: B. use the footage indicator stamped on the cable
● to test a 110-volt lighting circuit is alive, a person should best.... A. use an ammeter across
the line B. use a voltmeter across the line C. touch each wire in turn to ground through a fused
jumper D. place an ammeter in series with a fused jumper and connect one leg to ground.
Answer: D. place an ammeter in series with a fused jumper and connect one leg to ground
● Which of the following protects a power line against damage from lightning by carrying the
charge away from the power line? A. transformers B. circuit breakers C. phase wires D.
ground wires. Answer: D. Ground wires
● Which one of the folowing is generally used to increase or decrease voltage? A. rectifier B.
transformer C. voltmeter D. shunt. Answer: B. Transformer
● To prevent injury when lifting a 50-lb box, the body part where the most strength should be
focused is your A. back B. Legs C. Shoulders D. arms. Answer: B. Legs
● When should you lift a heavy object without having your back straight and using your legs?
A. to complete high priority jobs B. for short simple jobs C. when ti can be done safely D.
always have back straight and use legs. Answer: D. Always have back straight and use legs
● When lifting a 25-Ib box of material, the best lifting practice is to A. Keep the legs straight
and bend at the waist B. use a hand truck C keep the back straight and lift with the legs D. ask
a coworker for assistance. Answer: C. Keep the back straight and lift with the legs
● Of the following, the best way to stand when lifting a heavy object from the ground is with
the feet A. close together, pointed in the same way, and with the knees stiff B. close together,
right foot forward, knees stiff, and the back upright C alittle apart, pointed the same way, with
knees bent and back upright D. a little apart, pointed outward, with the knees and back both
bent. Answer: C. A little apart, pointed the same way, with knees bent and back upright
● Once you have secured afirm grip on the object, which of the folowing is the proper way to
stand? A slowly begin to straighten your legs, lifting slowly B. straighten legs slowly; twisting
your body as needed ot readjust your grip C. quickly straighten your legs and stand before
