COMPLETE QUESTIONS AND ANSWERS
BUNDLED
●● Electricity travels in closed circuits, and its normal route is through a
conductor. Electric shock occurs when:.
Answer: Your body becomes part of the circuit
●● Workers need to take which of the following common-sense steps to
protect themselves from falls through skylights and roof and floor
openings?.
Answer: -- Never sit on, lean against, or step on a skylight lens or any
covering placed over a hole in a roof or floor
-- Guard or securely cover all holes created or uncovered before leaving
a work area
-- Always use a PFAS when working over an unguarded or uncovered
opening more than six feet above a lower level
●● The two steps for avoiding hazards that are always taken before the
need for PPE is considered are:.
Answer: Workplace and engineering controls
●● The three main scaffold types are aerial lifts, supported scaffolds
and:.
,Answer: suspended scaffolds
●● Because using cranes or derricks to hoist personnel poses a serious
risk to the employees being lifted, any cranes and derricks that hoist
personnel must:.
Answer: -- Be placed on a firm foundation and be uniformly level within
1 percent of level grade
-- Move the personnel platform slowly and cautiously and have rotation-
resistant rope with a safety factor of 10
-- Have all brakes and locking devices set when the occupied personnel
platform is in stationary position
●● If the use of a power tool can result in flying sparks, metal shavings,
wood chips, splashes, or other debris, workers should:.
Answer: Protect themselves by wearing proper PPE
●● OSHA defines an excavation as:.
Answer: Any man-made cavity, depression, trench or cut in the earth's
surface formed by earth removal
●● A training program to teach proper lifting techniques should cover:.
Answer: -- Knowledge of the basic anatomy of the spine, muscles, and
joints of the trunk
-- The use of safe lifting postures and timing
, ●● Mechanical demolition refers to demolition using equipment like:.
Answer: wrecking balls and jackhammers
●● OSHA's electrical standards are based on:.
Answer: the NEC
●● What are the four main types of electrical injuries?.
Answer: Electrocution, electric shock, burns, indirect (e.g., a fall from a
ladder)
●● A shock's severity depends on:.
Answer: -- Length of exposure to electricity
-- The amount of current and its frequency
-- The current's path
●● Electrical burns are the most serious of the three major types of
burns, and most often occur:.
Answer: On the hands, from direct contact with current
●● Hot wires, ungrounded wires that can cause a shock if you touch
them, are usually:.
Answer: black or red