Answer ALL questions. Look for any feedback given if you get an answer incorrect. Keep choosing an answer until you get it correct. CORRECT or INCORRECT answers are indicated at the TOP of the page. A score is given at the TOP of the page when the exercise has been completed.
Which one of the following functions is performed by a resistor?
amplification
current limiting
switching
rectification
During their manufacture, only a set range of resistance values are produced. What are these values known as?
referred
preferred
inferred
deferred
Which one of the following functions is performed by a resistor?
storing a charge
voltage division
digital control
rectification
What is signified by the FOURTH colour band on a resistor?
tolerance value
multiplier
voltage rating
power rating
What is signified by the THIRD colour band on a resistor?
tolerance value
multiplier
voltage rating
power rating
What resistor tolerance value is signified by the colour gold?
+/- 10%
+/- 5%
+/- 2%
+/- 1%
What resistor tolerance value is signified by the colour silver?
+/- 10%
+/- 5%
+/- 2%
+/- 1%
What effect does high resistance have on the flow of electric current in a conductor?
it will restrict it
it will nave no effect
it will increase it
it changes the direction of current flow
What material is used in the construction of low-power resistors used in many electronic circuits?
carbon
silicon
germanium
aluminium
Where would a 'wire-wound' resistor be used?
in high power circuits
in semiconductor circuits
in sensitive electronic circuits
in low power circuits
A resistor has the following colours on it; RED, YELLOW, BLACK, GOLD. Identify the resistor value?
240 ohms
24 ohms
350 ohms
35 ohms
A resistor has the following code printed on it: 2M4J , Identify the resistor value?
24 milli ohms +/- 5%
2.4 mega ohms +/- 5%
24 milli ohms +/- 5%
240 mega ohms +/- 5%
A resistor has the following code printed on it: 5R6K , Identify the resistor value?
56 ohms +/- 10%
5.6 ohms +/- 10%
56 kilo ohms +/- 10%
560 kilo ohms +/- 10%
What type of resistor is likely to be used to manually control a lighting dimmer switch?
preset resistor
variable resistor
LDR
trimming resistor
Which one of the following functions is performed by a capacitor?
amplification
store a charge
switching
rectification
Which type of capacitor MUST be connected up with the correct polarity?
electrolytic
ceramic
mica
variable
What main function is performed by a capacitor in a 'coupling' circuit?
it blocks DC
it blocks AC
it amplifies a signal
it stores electricity
What is the insulating layer in a capacitor called?
dielectric
electrolytic
insulator
Cathode
What is the unit of measure for INDUCTANCE?
henry
farad
tesla
weber
Which one of the following components can set up an opposing current in an AC circuit?
transformer
capacitor
inductor
diode
A resistor has the following code printed on it: 1R0K , Identify the resistor value?