Electronic Systems & Devices (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 are the three main elements of the systems model?
What are the three main elements of the systems model?
Input, Process, Output
In switch terminology, what does 'Poles' refer to?
In switch terminology, what does 'Poles' refer to?
Number of separate circuits controlled
What does SPDT stand for in switch classification?
What does SPDT stand for in switch classification?
Single Pole Double Throw
What happens to current when resistance increases?
What happens to current when resistance increases?
Current decreases
Which type of capacitor must be connected with correct polarity?
Which type of capacitor must be connected with correct polarity?
Electrolytic capacitors
What is the main function of a diode?
What is the main function of a diode?
Allow current to flow in one direction
How does an LDR's resistance change in darkness?
How does an LDR's resistance change in darkness?
High resistance in darkness
What voltage limit is recommended for moisture sensors?
What voltage limit is recommended for moisture sensors?
Under 12V
What are the three terminals of a transistor?
What are the three terminals of a transistor?
Collector, Base, Emitter
What does the 555 timer's astable mode produce?
What does the 555 timer's astable mode produce?
Regular flashing intervals
What percentage of energy do LEDs convert to light?
What percentage of energy do LEDs convert to light?
Almost 90%
What special feature do servo motors contain?
What special feature do servo motors contain?
Internal feedback systems
What type of energy do batteries convert?
What type of energy do batteries convert?
Chemical energy to electrical