Circuits (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 voltage drop occurs across each of two resistors connected in series across ?
What voltage drop occurs across each of two resistors connected in series across ?
How much greater should load resistance be than divider resistor value in a potential divider?
How much greater should load resistance be than divider resistor value in a potential divider?
At least ten times
In the input-process-output model, what typically performs the 'process' function?
In the input-process-output model, what typically performs the 'process' function?
Transistor circuit
What happens to a thermistor's resistance as temperature increases?
What happens to a thermistor's resistance as temperature increases?
Decreases
What base voltage is needed for a silicon transistor to switch from off to on?
What base voltage is needed for a silicon transistor to switch from off to on?
What happens to an LDR's resistance when light shines on it?
What happens to an LDR's resistance when light shines on it?
Decreases
Where must the LDR be positioned in a circuit that switches on lights when it gets dark?
Where must the LDR be positioned in a circuit that switches on lights when it gets dark?
Top resistor in potential divider
How does a moisture sensor allow current to flow in a rain alarm circuit?
How does a moisture sensor allow current to flow in a rain alarm circuit?
Water bridges its contacts
What is the resistance value of a resistor with Red, Violet, Orange, Gold bands?
What is the resistance value of a resistor with Red, Violet, Orange, Gold bands?
What do the first two colour bands on a resistor indicate?
What do the first two colour bands on a resistor indicate?
First two digits of resistance
What feature do S-DeC modelling boards have underneath the holes?
What feature do S-DeC modelling boards have underneath the holes?
Metal contact strips
What soldering iron specification is recommended for PCB work?
What soldering iron specification is recommended for PCB work?
15-watt with tip
What chemical solution is used to etch PCBs by dissolving unprotected copper?
What chemical solution is used to etch PCBs by dissolving unprotected copper?
Ferric chloride