Power engineering Class 4 Part B Exam
Questions With Complete Solutions
Velocity (m/s) - Answer-Change in position / time
Acceleration (m/s^2) - Answer-Change in velocity (m/s) / time (s)
Force (Newton) - Answer-mass (kg) x acceleration (m/s^2) , any action on a body
that tends to change its size, shape, or its state of rest or motion
Force of Gravity - Answer-mass (kg) x 9.81 m/s^2
Pressure (Pa) - Answer-Force (N) / area (m^2)
Work (J) - Answer-Force (N) x distance (m)
Power - Answer-Work done / time , Rate of doing work
,Heat Treatment - Answer-Different proceduces performed on materials to
improve their mechanical properties
2 Main Types of Welds - Answer-Fillet and Groove
Ferrous Metal - Answer-Contains iron and carbon
Non-ferrous Metal - Answer-Little to no carbon , Cannot be cut with an oxy-fuel
torch, Non-magnetic
Brinell Tester - Answer-Tests Hardness
Charpy Test - Answer-Tests toughness
When an injury related investigation is taking place - Answer-Work being done at
a site may be suspended until any serious safety hazards are corrected
Brass - Answer-An alloy of copper and zinc.
Wrought Iron - Answer-Resultant from removing almost all the impurities and
carbon from Pig iron
Z94.1 - Answer-Protective headwear
Z94.3 - Answer-Protective Eyewear
,Z94.2 - Answer-Hearing Protection
Z94.4 - Answer-Respiratory Protection
Z195 - Answer-Protective Footwear
Visual Testing - Answer-Easiest and cheapest method of weld testing
Cobalt - Answer-Radioactive material used in Radiography
Employer - Answer-Holds responsibility to ensure than an emergency plan is in
place
19.5% - Answer-Minimum level of oxygen necessary in a confined space
Flash Point of a Liquid - Answer-The temperature at which the liquid will form a
gas and burn
Burning of Hydrocarbons - Answer-The fuel must be vaporized
Gas Cylinder Storage - Answer-Should be upright in order to prevent liquefied
product from escaping
Gas Blanket - Answer-Prevents ingress of air into storage vessels
, 6 m - Answer-Minimum for oxygen and acetylene storage distance apart
Cylinder Valve - Answer-Most easily damaged part of the vessel
WHMIS - Answer-Workplace Hazardous Materials Information System
Vapor State - Answer-The state at which products can burn
Combustion - Answer-Is exothermic, self sustaining, and can occur in an inert
atmosphere Correct
Class A Fire Extinguisher - Answer-Wood or Plastic , uses foam
Class B Fire Extinguisher - Answer-Oil or Gasoline , uses foam
Class C Fire Extinguisher - Answer-Electrical , uses CO^2 , does not leave residue ,
Self expelling
Class D Fire Extinguisher - Answer-Combustible Metals , uses a dry powder unit
Class K Fire Extinguisher - Answer-Kitchen fires , cooking oils
Class I Electrical Classification - Answer-Electrical equipment must be designed to
be fire safe in any area where there may be the presence of flammable gases or
vapors
Questions With Complete Solutions
Velocity (m/s) - Answer-Change in position / time
Acceleration (m/s^2) - Answer-Change in velocity (m/s) / time (s)
Force (Newton) - Answer-mass (kg) x acceleration (m/s^2) , any action on a body
that tends to change its size, shape, or its state of rest or motion
Force of Gravity - Answer-mass (kg) x 9.81 m/s^2
Pressure (Pa) - Answer-Force (N) / area (m^2)
Work (J) - Answer-Force (N) x distance (m)
Power - Answer-Work done / time , Rate of doing work
,Heat Treatment - Answer-Different proceduces performed on materials to
improve their mechanical properties
2 Main Types of Welds - Answer-Fillet and Groove
Ferrous Metal - Answer-Contains iron and carbon
Non-ferrous Metal - Answer-Little to no carbon , Cannot be cut with an oxy-fuel
torch, Non-magnetic
Brinell Tester - Answer-Tests Hardness
Charpy Test - Answer-Tests toughness
When an injury related investigation is taking place - Answer-Work being done at
a site may be suspended until any serious safety hazards are corrected
Brass - Answer-An alloy of copper and zinc.
Wrought Iron - Answer-Resultant from removing almost all the impurities and
carbon from Pig iron
Z94.1 - Answer-Protective headwear
Z94.3 - Answer-Protective Eyewear
,Z94.2 - Answer-Hearing Protection
Z94.4 - Answer-Respiratory Protection
Z195 - Answer-Protective Footwear
Visual Testing - Answer-Easiest and cheapest method of weld testing
Cobalt - Answer-Radioactive material used in Radiography
Employer - Answer-Holds responsibility to ensure than an emergency plan is in
place
19.5% - Answer-Minimum level of oxygen necessary in a confined space
Flash Point of a Liquid - Answer-The temperature at which the liquid will form a
gas and burn
Burning of Hydrocarbons - Answer-The fuel must be vaporized
Gas Cylinder Storage - Answer-Should be upright in order to prevent liquefied
product from escaping
Gas Blanket - Answer-Prevents ingress of air into storage vessels
, 6 m - Answer-Minimum for oxygen and acetylene storage distance apart
Cylinder Valve - Answer-Most easily damaged part of the vessel
WHMIS - Answer-Workplace Hazardous Materials Information System
Vapor State - Answer-The state at which products can burn
Combustion - Answer-Is exothermic, self sustaining, and can occur in an inert
atmosphere Correct
Class A Fire Extinguisher - Answer-Wood or Plastic , uses foam
Class B Fire Extinguisher - Answer-Oil or Gasoline , uses foam
Class C Fire Extinguisher - Answer-Electrical , uses CO^2 , does not leave residue ,
Self expelling
Class D Fire Extinguisher - Answer-Combustible Metals , uses a dry powder unit
Class K Fire Extinguisher - Answer-Kitchen fires , cooking oils
Class I Electrical Classification - Answer-Electrical equipment must be designed to
be fire safe in any area where there may be the presence of flammable gases or
vapors
