Drilling (Junior Cert Engineering): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What is the rotating cutting tool used in drilling operations called?
What is the rotating cutting tool used in drilling operations called?
Drill bit
What system does a pillar drilling machine use to change drilling speeds?
What system does a pillar drilling machine use to change drilling speeds?
Stepped pulley system
What type of gears convert rotational motion in a manual hand drill?
What type of gears convert rotational motion in a manual hand drill?
Bevel gears
In which directions can battery-operated cordless drills operate?
In which directions can battery-operated cordless drills operate?
Forward and reverse
What material are twist drills manufactured from?
What material are twist drills manufactured from?
High-speed steel
What is the standard point angle for general purpose drilling?
What is the standard point angle for general purpose drilling?
118°
What is the maximum drill diameter typically used with parallel shank drills?
What is the maximum drill diameter typically used with parallel shank drills?
13mm
When must the chuck key be removed from a drilling machine?
When must the chuck key be removed from a drilling machine?
Before starting the machine
What speed do larger drills require compared to smaller drills?
What speed do larger drills require compared to smaller drills?
Slower speeds
What is the purpose of drilling a pilot hole?
What is the purpose of drilling a pilot hole?
Keep larger drill centred
What is a clearance hole in relation to a bolt?
What is a clearance hole in relation to a bolt?
Slightly larger than the bolt
What does countersinking do to a hole?
What does countersinking do to a hole?
Enlarges the opening
In which direction must reamers always be turned?
In which direction must reamers always be turned?
Clockwise