BASIC 
ELECTRONICS COURSE 
Page 37 INDEX

"Auto-Scoring" Test

Hello ! This test is designed to see how much you know during the early stages of the course. You can take the test BEFORE starting the course and then after a number of pages to compare the results.  There are 25 questions and when you have finished, click  'My Score' button. You will then be given a score plus the correct answers for the questions you got wrong. Start the test now!  It is "Auto-Scoring" and does not have to refer back to the main website for checking.   All the best, Colin

1.	What is the colour code for a 47k resistor?
	yellow-purple-red    yellow-green-orange    orange-purple-orange orange-green-yellow  yellow-purple-yellow    yellow-purple-orange
2.	What is the value of the following resistor: orange-white-yellow-gold
	3k9 5%    39k 5%    390k 5%    390k  10%   390R  5%
3.	Two10k resistors are connected as shown: What is the combined resistance?
	10k    20k    5k
4.	What is the value of this resistor:
	2k2    22k    220k    2M2
5.	What is the value of this combination:
	10n    20n    5n
6.	Two resistors are placed in series to:
	Increase the total resistance   Decrease the total resistance
7.	Which set of resistors are found in the standard 5% range:
	22k  39k   47k   55k   68k   27k  33k   44k   110k   220k   470k   47k  68k   100k   270k   370k   2M2   100R  2k2   3k3   4k7   6k6   120k   22R  33R   47R   68R   100R
8.	In the diagram on the left, when  the voltage on the base rises (i.e: the current into the base increases) what happens to the voltage on the collector:
	It rises   It reduces   The voltage does not change
9.	The transistor-type in question 8 is:
	PNP    NPN    NNP   PNN
10.	The input line in question 8 is:
	The Collector    The Base    The Emitter
11.	From Question 8, we can say:
	The Output is IN-PHASE with the Input    The Output is OUT-OF-PHASE with the Input
12.	The resistor connected to the collector is called:
	The Bias Resistor   The Dropper Resistor    The Load Resistor
13.	Three features of a resistor are:
	Voltage dropping, current dropping, amplifying signals   Blocking DC, limiting current, biasing   Current limiting, biasing, voltage dropping   Blocking AC, Current limiting, amplifying DC signals
14.	A Resistor and Capacitor in series is called:
	A Tank Circuit    A Timing Circuit    An Oscillator Circuit
15.	The animation on the left demonstrates:
	The voltage flowing between a resistor and capacitor  Energy flowing between a coil and capacitor  How the Delay circuit works
16.	The arrows in the animation in question 15 represent:
	Electrical energy being converted to magnetic flux  Electricity coming out of the coil  The direction of flow of current
17.	The natural waveform produced by a Tank Circuit is:
	A Square Wave    A Sine Wave    A Pulse   A Triangular Wave
18.	The characteristic voltage-drop across a red LED is:
	0.6v    3v    1v7   6v
19.	Two 100R resistors in parallel produce a resistance:
	100R    200R    50R
20.	When a transistor "turns-on," the resistance between the collector and emitter terminals:
	Increases    Decreases    Stays the same
21.	Two 100n capacitors in parallel produce a capacitance:
	100n    200n    50n
22.	For the animation below, the resistor connected to the input of the first transistor is   reducing in value. This has the effect of:
	Turning ON the PNP transistor     Turning OFF the PNP transistor     No effect on the circuit
23.	The animation above shows the NPN transistor rising. This is a diagrammatical way of showing the transistor is:
	Delivering more voltage and current to the load     Delivering less current to the load     The voltage and current to the load remain the same
24.	For the animation below, as the voltage on the input rises, the output voltage:
	Falls    Rises    Cannot be determined
25.	For the animation above, the input and output voltages are:
	IN PHASE    OUT-OF-PHASE    Cannot be determined