Power Control (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What voltage and type is mains electricity supplied at?
What voltage and type is mains electricity supplied at?
230V AC
What is the primary function of a DC rectifier?
What is the primary function of a DC rectifier?
Converts AC into DC
Which welding process specifically requires DC power to function properly?
Which welding process specifically requires DC power to function properly?
MIG welding
What component is used in Stage A to reduce voltage?
What component is used in Stage A to reduce voltage?
Step-down transformer
What is the key property of diodes used in Stage B?
What is the key property of diodes used in Stage B?
Allow current in one direction only
What does the capacitor do in Stage C of the rectifier?
What does the capacitor do in Stage C of the rectifier?
Smooths pulsing DC output
How does DC differ from AC in terms of current flow?
How does DC differ from AC in terms of current flow?
DC flows in one constant direction
What portions of the AC cycle do diodes remove?
What portions of the AC cycle do diodes remove?
Negative portions
What is the correct sequence of the three rectifier stages?
What is the correct sequence of the three rectifier stages?
Transformer, Diodes, Capacitor
Which advantage does DC provide for welding processes?
Which advantage does DC provide for welding processes?
Consistent arc stability
How does a capacitor create smooth DC from pulsing current?
How does a capacitor create smooth DC from pulsing current?
Stores charge at peaks, releases at lows
Where are DC rectifiers essential components?
Where are DC rectifiers essential components?
MIG welding equipment