Which is the correct formula for calculating resistance in a circuit?
R = V ÷ I
R = V x I
R = I ÷ V
Which of these is an output device?
Switch
Thermistor
Light-emitting diode (LED)
What are the three legs of a transistor called?
Base, counter and emitter
Base, collector and emitter
Base, collector and emulator
At what voltage will a thyristor turn on?
4 V
2 V
6 V
What is resistance measured in?
Ohms (Ω)
Volts (V)
Millimetres (mm)
What is a truth table?
A table of tolerances for resistors
A table of input devices for a system
A table of logic possibilities for logic gates
How do you calculate gear ratio?
Number of teeth on drive gear - number of teeth on driven gear
Number of teeth on drive gear x number of teeth on driven gear
Number of teeth on drive gear ÷ number of teeth on driven gear
Which converts rotary motion into linear?
Rack and pinion
Bevel gear
Crank and slider
Which of these is NOT one of the 6 Rs?
Reduce
Redo
Recycle
What is the tolerance of an E12 resistor?
10 per cent
15 per cent
5 per cent