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WorksheetsHardware Perlims
Total questions: 25
Worksheet time: 15mins
Which of the following are not a semiconductor?
Antimony
Tin
Germanium
Mica
Which diode works in reverse bias?
Photo diode
Zener diode
Schottky diode
P-N diode
“ The sum of all voltages around a closed loop in any circuit must be equal to zero” belong to which law?
Ohm’s law
Kirchoff’s current law
Kirchoff’s voltage law
Faraday’s law
The point where more than two network elements meet
Node
Mesh
Loop
Branch
Who invented the first DC generator?
Michael Faraday
Charles F.Brush
Isaac Newton
Robert Boyle
Which gives safe transferring of voltages in transformers?
DC
AC
Both AC and DC
None of the above
Why the capacitors work on AC only
Capacitor gives infinite resistance to dc
The reactance of the capacitance is inversely proportional to frequency
Because, in DC the frequency is zero
All the above
Unit of magnetic flux
Henry
Tesla
Weber
Farad
Which of the following device is/are located inside of the digital watch?
Microcontroller
Microprocessor
Both a and b
None of the above
PLC refers to
Programmable Logic Converter
Power Line Center
Programming Logic Circuits
Programmable Logic Controller
What is the total resistance value in the below circuit?
15Ω
19Ω
27Ω
11Ω
The below symbol is
Rectifier
LED
Diode
Thyristor
The true power in a capacitor is zero
True
False
Light year is a unit of____
Distance
Time
Intensity of light
Gravity
Pascal is a unit of___
Temperature
Distance
Intensity
Pressure
Metals contains good conductors of electricity because
They contains free electrons
The atoms are lightly packed
They have high melting point
All the above
Sound of frequency below 20Hz are called
Ultrasonic
Audio sounds
Infrasonic
Supersonic
Sir C.V.Raman was awarded Nobel prize for his work in
Radiation
Diffraction
Polarization
Scattering
The current supplied by the source is 5 A, what will be the source voltage?
20 V
25 V
40 V
50 V
What is the equivalent resistance of the given Circuit ?if R1=3.5 ohm and R2 = 2.4 ohm
0.567 ohm
0.7023 ohm
1.345ohm
1.456 ohm
Find the value of resistance (Rab) in the following circuit
15Ω
5.6Ω
21Ω
11.2Ω
What is unit of Inductance ?
Henry
Farad
Ohm
Ampere
Pick the correct statement
Capacitors which Oppose sudden change in voltage
Capacitors which oppose sudden change in current
Inductor which oppose the sudden change in voltage
None of the above
Which one of the following is the machine language?
Mov A,#12H
7E012
x^y
int *x
In which mode a transistor can act as a switch (0 and 1)
Cut-off mode
Saturation mode
Active mode
Both A and B
