Basic Electronics ( Test 2)
Basic Electronics Test 2
Challenge your knowledge of basic electronics concepts with our engaging quiz! From diodes to transistors, this quiz covers essential topics that every electronics enthusiast should know.
Here's what to expect:
- 22 well-crafted questions
- Covers various components and principles of electronics
- Multiple-choice format to test your knowledge
If one of the diodes in a bridge full-wave rectifier opens, the output is approximately
0V
one-fourth the amplitude of the input voltage
a half-wave rectified voltage
a 120Hz voltage
The cathode of zener diode in a voltage regulator is normally
more positive than the anode
more negative than the anode
at +0.7 V
grounded
If a certain zener diode has a zener voltage of 3.6V,it operates in
regulated breakdown
Zener breakdown
forward conduction
avalanche breakdown
.An LED
emits light when reverse biased
senses light when reverse biased
emits light when forward biased
acts as a variable resistance
When operated in cutoff and saturation, the transistor acts like
a linear amplifier
a switch
a variable capacitor
a variable resistance
In a voltage divider biased npn transistor, if the upper voltage-divider resistor(the one connected to VCC) opens,
the transistor goes into cutoff
the transistor goes into saturation
the transistor burns out
the supply voltage is too high
In a voltage divider biased npn transistor, if the lower voltage-divider resistor(the one connected to ground) opens,
the transistor goes into cutoff
The transistor goes into saturation
The transistor burns out
The supply voltage is too high
A certain common-emitter amplifier has a voltage gain of 100.If the emitter bypass capacitor is removed,
The circuit will become unstable
the voltage gain will decrease
the voltage gain will increase
The Q-point will shift
The JFET is
a unipolar device
a voltage-controlled device
a current controlled device
the supply voltage is too high
The channel of JFET is between the
gate and drain
drain and source
gate and source
input and output
A JFET always operates with
gate to source pn junction reverse-biased
gate to source pn junction forward-biased
the drain connected to ground
the gate connected to source
.The constant-current area of a FET lies between
cutoff and saturation
cutoff and pinch-off
0 and IDSS
pinch-off and breakdown
For an oscillator to properly start, the gain around the feedback loop must initially be
1
less than 1
greater than 1
none of above
IDSS is
the drain current with the source shorted
the drain current at cutoff
The maximum possible drain current
The midpoint drain current
Drain current in the constant-current area increases when
the gate-to-source bias voltage decreases
the gate-to-source bias voltage increases
the drain to source voltage increases
the drain to source voltage decreases
At cutoff, the JFET channel is
at its widest point
completely closed by the depletion region
extremely narrow
reverse-biased
A certain p-channel E-MOSFET has a VGS(th)=-2V.If VGS=0V,the drain current is
0A
ID(on)
maximum
IDSS
A thyristor has
two pn junctions
three pn junctions
Four pn junctions
Only two terminals
Common types of thyristors include
BJTs and SCRs
UJTs and PUTs
FETs and TRIACs
DIACs and TRIACs
The specified value of holding current for an SCR means that
the device will turn on when the anode current exceeds this value
the device will turn off when the anode current falls below this value
the device may be damaged if the anode current exceeds this value
the gate current must equal or exceed this value to turn the device on
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