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WorksheetsQUIZZ 2
Total questions: 30
Worksheet time: 16mins
Which of the following is not an electronic device?
Mobile Phone
Magnifying Glass
Computer
Keyboard
Which of the following is not a physical component of an electronic circuit?
Capacitor
Inductor
Diode
Temperature
Which of the following is not a property of semiconductors used in electronic devices?
They excite Electrons
They don't emit light
They have high thermal conductivity
They have variable electrical conductivity
What is the effect of temperature on the recombination rate of electrons in electronic circuits?
Recombination rate increases with increase in the temperature
Recombination rate decreases with increase in the temperature
Recombination rate is independent of temperature
Recombination of electrons doesn’t occur in semiconductors
Which of the following is correct about photo diode electronic devices?
P-N junction is connected in reverse bias.
Electron-hole pairs are generated by impurity injection in depletion layer
It is a photovoltaic cell
No external voltage is applied
A bar magnet is divided in two pieces. Which of the following statements is true?
The bar magnet is demagnetized.
The magnetic field of each separated piece becomes stronger.
The magnetic poles are separated.
Two new bar magnets are created.
A bar Magnet is a
Iron fillings
north pole
strongest
Which of the following substance is not magnetic?
iron
cobalt
nickel
copper
The smallest particle of an element is known as an:
Proton
Electron
Neutron
Atom
How can you make a magnet temporarily lose its magnetism?
a) By heating it
b) By blowing on it
c) By hitting it very bad
d) Both a) and c)
In the alarm circuit, these act as switches:
(a)
Which of these can be placed any way on a PCB?
Which of these should only be placed in one direction on a PCB?
We set the soldering iron to which temperature?
3500 degrees
350 degrees
250 degrees
410 degrees
True or False: Water boils at 220 degrees Fahrenheit.
True
False
Magnets produce an invisible area of magnetic force that is called a magnetic ________.
gravity
repel
field
force
When (a) poles are placed near one another, they will attract.
opposite
same
north
south
A positive number multiplied by a negative number equals a...
Negative Number
Positive Number
Immediately after the switch is closed, the voltage across the 3uF capacitor is
0V
45V
22.5V
45e-t/RC V
The time constant for this circuit is
0 Seconds
3 Seconds
3 microseconds
0.33 Seconds
What is the name of this component?
battery
cell
open switch
lamp
What is the name of this component?
Fuse
Cell
Motor
Lamp
CAD stands for
Computer-Aided Design
Computer-Aided Manufacturing
Computer-Aided Development
Computer-Aided Decoder
The energy resource are most expensive to build are
Nuclear
Wind
Biofuels
Two batteries in a circuit make the lights in the circuit brighter than one battery.
True
False
What colour is sunset on Mars?
Blue
Green
Red
Which is the hottest?
Lightning
Sun's surface
What is the most common blood type in the world?
A
O
AB
B
Which sport uses the biggest field?
Polo
Cricket
Basketball
American football
What is the largest planet in our solar system?
Saturn
Earth
Uranus
Jupiter
