mod 7 fact sheet Flashcards
what fire extinguisher type and colour for electrical fire?
CO2 - 95% red, 5% black
what fire extinguisher type and colour for fuel (liquid) fire?
foam - 95% red, 5% cream
what should be done before administering first aid to a person suffering electric shock?
victim/source should be isolated
during refuelling operations, how should phone be kept?
switched off
what is the easiest method of checking hole diameter?
plug gauge
how are grinding wheels mounted and dressed?
trained personnel only
what is hacksaw blade set?
- stops blade jamming
- allows cut wider than blade
sensitive drill (pillar drill) is fed how? and uses drills up to what diameter?
- feed provided by hand lever
- up to 3/4”
general purpose file…
- 1/3 taper
- double cut
- both faces single cut
what way are reamers turned?
only ever clockwise
what accuracy does a grade A surface plate have?
less than 0.001”
how are vernier height gauges checked?
on surface table at 20 degrees
how far does an imperial micrometer screw thread advance per turn?
- 1/40”
- 0.025”
when taking internal measurements with english vernier callipers…
nib dimension added on
how is test equipment checked for accuracy?
- checking calibration
- pre use checked against known standard
