BGAS Grade 2/3 Model Multiple Choice question & answers - Part 6

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 126.        Which blasting Grade best describes thorough blast cleaning?

a)            Sa 2

b)            Sa 21/2

c)            Sa3

d)            Sa1

 




127.        Very thorough blast cleaning is refers to

a)            Sa1

b)            Sa2

c)            Sa2½

d)            Sa3

 

 

128.        Blast cleaning to visually clean steel is refers to

a)            Sa1

b)            Sa2

c)            Sa2½

d)            Sa3

 

129.        How many photographs of Rust grade are in BS 7079 part A?

a)            4

b)            14

c)            8

d)            16

 

130.        How many Abrasive Blast Cleaning Photographs are in BS 7079 part A?

a)            4

b)            14

c)            8

d)            16

 

131.        How many photographs of flame cleaning standards are in BS 7079 part A?

a)            4

b)            14

c)            8

d)            16

 

132.        How many photographs available by using tools according to BS 7079?

a)            14

b)            6

c)            4

d)            16

133.        BS 7079 does not contains

a)            Rust Grades

b)            Blast Grades

c)            Hand and Power tool Grades

d)            Salt tests on Substrate

 

134.        Wheelabrators sometimes called as

a)            Centrifugal blast unit

b)            Dry abrasive blasting

c)            Wheel jetting

d)            Water blasting

 

 

135.        ____________ Abrasive is preferred for Wheelabrators

a)            Steel Grit

b)            Steel Shot

c)            Grit and Shot Mixed

d)            Copper Slag


136.        What is the approximate speed of the abrasive particles exiting a Wheelabrators?

a)            450 mph

b)            220 mph

c)            Mach 3

d)            100 psi

 

137.        Air pressure measured by

a)            Pound per square inch

b)            Pound per square feet

c)            Cubic feet per min

d)            Cubic feet per inch

 

138.        Air pressure delivered through

a)            Pound per square inch

b)            Pound per square feet

c)            Cubic feet per min

d)            Cubic feet per inch

 

139.        Which blasting use is removal for soluble salts?

a)            Wet abrasive blasting

b)            Dry abrasive blasting

c)            Solvent / with water

d)            Water wash


140.        Which blasting use are removal for Sulphate and chloride?

a)                      High pressure water blasting

b)                      High pressure water plus abrasive

c)                       Low pressure water plus abrasive

d)                      Water wash


141.         Which blasting use is removal for toxic materials?

a)                      Wet abrasive blasting

b)                      Dry abrasive blasting

c)                       Solvent / with water

d)                      Water wash


142.         How many photographs totally covered as per BS 7079?

a)                      32

b)                      24

c)                       28

d)                      30


143.         Another name for a Vapour Trap is?

a)                      Air wash cup

b)                      Dry out pot

c)                       Knock out pot

d)                      Pressure regulator 


144.        One of the most important safety items of equipment in abrasive blasting is

a)            Dry abrasive mix

b)            The banana gauge

c)            Dead means handle

d)            100 psi compressor

 

145.        Miser Valve ___________________ in dry blasting

a)            Controls the Air Pressure

b)            Controls the flow of abrasives

c)            Removes oil and water

d)            Avoids leakage

 

146.        The optimum pressure to achieve 100% efficiency in abrasive blast cleaning is?

a)            75 psi

b)            450 psi

c)            100 psi

d)            220 psi

 

147.        Reccova valve is ____________

a)            Control abrasive transfer

b)            Stores abrasives

c)            Removes water

d)            Control air from compressor

 

148.        With every 11 degree rise in temperature, the air’s ability to hold water

a)            Would rise by 11%

b)            Would half

c)            Would double

d)            Would decrease by 11%

 

149.        Carbon Impregnated hoses are used to

a)            Conduct Electricity

b)            Prevent static electricity

c)            Reduce friction

d)            Discharge static electricity

 

150.        _______________ can be used to check air pressure

 

a)            Hygrometer

b)            Surface profile needle gauge

c)            Hypodermic needle gauge

d)            Touch pyrometer 

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