NEW
Font size
WorksheetsCIRCUIT RACE ROUND 1
Total questions: 20
Worksheet time: 30mins
What does DC stand for in electronics?
Dynamic Current
Direct Current
Digital Circuit
Diode Capacitor
Which type of semiconductor material has excess electrons, giving it a negative charge?
N-type
P-type
Silicon-type
Germanium-type
In a transistor, what are the three layers called?
Collector, Emitter, Resistor
Source, Drain, Gate
P-type, N-type, Junction
Base, Emitter, Collector
What is the primary function of a diode in a circuit?
To amplify signals
To control the flow of current in one direction
To regulate voltage
To store electrical energy
What is the purpose of a crystal oscillator in electronic circuits?
To generate high-frequency signals
To amplify audio signals
To modulate radio frequency signals
To stabilize the frequency of a clock signal
Which of the following is an application of Zener diode.
Rectifier
Voltage regulator
Amplifier
Oscillator
If doubling the voltage across the resistor doubles the current through the resistor then:
the resistor value decreased
the resistor value did not change
the resistor value increased
it is impossible to determine the change in the resistor
8051 microcontroller is a:
16 bit microprocessor
8bit microcontroller
16 bit microcontroller
8bit microprocessor
What does “555” in a 555 timer IC represent
5ohm,5ohm,5ohm Resistors
5F,5F,5F capacitors
5kohm,5kohm,5kohm Resistors
5uF,5uF,5uF Capacitors
An electron in the conduction band:
has higher energy than the electron in the valence band
has lower energy than the electron in the valence band
looses its charge easily
jumps to the top of the crystal
Which region in BJT transistors works as an amplifier?
Cut-off region
Saturation region
Active region
None of the options
How many NAND circuits are there in an 7400 IC
2
4
1
5
Simplify the following expression
Y=A B̅ C + A B̅ C̅
Y = C
Y = B
Y = A
Y = AB̅
Which of the following is not a valid rule of Boolean algebra:
A+A’=A
A.A=A
A.A’=0
A+A’=1
To store a BCD digits,How many bits are needed
2
4
1
3
Hexadecimal equivalent of the decimal number 10101:
15
23565
1010
2775
In the toggle mode J-K flipflop has:
j=0,k=1
j=1,k=1
j=0,k=0
j=1,k=0
The reverse saturation current in a Silicon Diode is _____ than that of Germanium Diode
Equal
Higher
Lower
Depends on temperature
Units of measurement for forward bias and reverse current of a diode are
µA and µA
mA and µA
µA and mA
mA and mA
In a constant voltage DC circuit, when the resistance increases, the current will
decrease
stop
increase
remain constant
