1s051 Volume 3 (Edit Code 5)
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FOR REFERENCE USE ONLY
- 1.Which of the following is an improper way to store pliers, screwdrivers or wrenches?
- A.
A. Rack, shelves or tool boxes.
- B.
B. Pant or coat pockets.
- C.
C. Carrying bags.
- D.
D. Tool belts.
- 2.What is the chief hazard associated with electrically powered tools?
- A.
A. Fire.
- B.
B. Flash burns.
- C.
C. Hand injuries.
- D.
D. Electrical shock.
- 3.On an electric drill, the chuck
- A.
A. must be securely anchored against the shank of the drill bit.
- B.
B. must be released before the drill is turned on.
- C.
C. should be loosely attached to the drill bit.
- D.
D. must be depressed to release the lock.
- 4.A twist drill bit with four flutes should only be used to
- A.
A. start holes in sheet metal.
- B.
B. start holes in plaster.
- C.
C. enlarge cored holes.
- D.
D. drill into plaster.
- 5.Maintenance on soldering irons and guns is primarily centered on the
- A.
A. tips.
- B.
B. handle.
- C.
C. shank.
- D.
D. power cord.
- 6.Machine guarding is necessary primarily because
- A.
A. machines do not perform in a consistent manner.
- B.
B. most hazards can be eliminated through engineering.
- C.
C. a machine’s moving parts are fragile and must be protected.
- D.
D. people are unpredictable and may perform their work inconsistently.
- 7.To prevent mishaps involving machinery, the best action, which should be pursued first, is to
- A.
A. educate the worker.
- B.
B. engineer hazards out.
- C.
C. use machine guards for existing hazards.
- D.
D. provide personal protective equipment.
- 8.In-running nip points are a specific danger of which type of motion?
- A.
A. Cutting.
- B.
B. Rotating.
- C.
C. Transverse.
- D.
D. Reciprocating.
- 9.Which hazard is commonly associated with a transverse motion?
- A.
A. Projections on the rotating parts may injure the worker.
- B.
B. Flying chips or scraps are likely to strike the operator.
- C.
C. The worker may be struck or caught in a pinch by the moving part.
- D.
D. The worker may be caught between a moving and stationary part.
- 10.Which type of machine guard is preferable to all others?
- A.
A. Fixed.
- B.
B. Interlock.
- C.
C. Adjustable.
- D.
D. Self-adjusting.
- 11.Which guard will not allow a machine to start until the guard is in its proper place?
- A.
A. Fixed.
- B.
B. Interlock.
- C.
C. Adjustable.
- D.
D. Self-adjusting.
- 12.If a machine guard opens when stock is moved into the danger area and returns to a rest position when the stock is removed, that guard is
- A.
A. fixed.
- B.
B. adjustable.
- C.
C. interlocking.
- D.
D. self-adjusting.
- 13.Which safety device uses operator wristbands to ensure a worker’s hands are automatically withdrawn from the point of operation?
- A.
A. Gate.
- B.
B. Holdout.
- C.
C. Pull-out.
- D.
D. Presence sensing.
- 14.Which safety device resembles an interlocked machine guard?
- A.
A. Gate.
- B.
B. Holdout.
- C.
C. Pull-out.
- D.
D. Presence sensing.
- 15.To ensure proper layout, equipment and machinery must be arranged
- A.
A. so that weight is distributed equally.
- B.
B. to permit an even flow of materials.
- C.
C. clockwise most hazardous to least hazardous.
- D.
D. so that similar hazards are located close together.
- 16.In a machine shop, how many inches wide should aisles be to permit free movement of workers and equipment?
- A.
A. 12.
- B.
B. 18.
- C.
C. 24.
- D.
D. 36.
- 17.The flow of electricity may be compared to
- A.
A. a streak of lightning.
- B.
B. water running through a pipe.
- C.
C. water passing through the ground.
- D.
D. lightning passing through the ground.
- 18.What unit of measurement is used to measure electrical pressure, potential, or electromotive force?
- A.
A. Volts.
- B.
B. Ohms.
- C.
C. Amperes.
- D.
D. Coulombs.
- 19.According to the federal regulation 29 Code of Federal Regulation (CFR) 1910, Occupation Safety and Health Standards, voltage is considered to be high at
- A.
A. 120 volts.
- B.
B. 220 volts.
- C.
C. 440 volts.
- D.
D. 600 volts.
- 20.The primary factor influencing the severity of electrical shock to the human body is the
- A.
A. length of the exposure.
- B.
B. amount of the current flow.
- C.
C. level of the voltage applied.
- D.
D. frequency of the electrical charge.
- 21.How much current causes a normally harmless shock to be felt?
- A.
A. 1 milliampere.
- B.
B. 25 milliamperes.
- C.
C. 1 ampere.
- D.
D. 25 ampere.
- 22.What range of current, if it lasts for one second or longer, may produce an immediately fatal electrical shock?
- A.
A. 10 to 15 milliamperes.
- B.
B. 25 to 50 milliamperes.
- C.
C. 60 to 75 milliamperes.
- D.
D. 100 to 300 milliamperes.
- 23.The body can normally tolerate
- A.
A. direct currents (DC) one to two times greater than alternating currents (AC).
- B.
B. DCs three to five times greater than ACs.
- C.
C. ACs six to nine times greater than DC.
- D.
D. ACs 10 to 12 times greater than DCs.
- 24.What is the purpose of placing bonding wire between two metal objects?
- A.
A. Continuity of system grounds.
- B.
B. Equalization of static charges that may be generated.
- C.
C. Dissipation of static electrical charges to a ground.
- D.
D. Prevention of accumulations of dynamic electricity.
- 25.An example of a system ground is a
- A.
A. three-prong adapter.
- B.
B. double-insulated tool.
- C.
C. return wire attached to a ground in the earth.
- D.
D. wire attached to the frame of a tool and a metal bar.
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