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WorksheetsElectronics and Semiconductor Quiz
Total questions: 45
Worksheet time: 23mins
Which of the following elements is known for its strong ferromagnetic properties?
Aluminum
Iron
Copper
Silicon
What is a permanent magnetic dipole?
A magnetic moment induced by an external field
A magnetic moment that remains even in the absence of an external field
A temporary magnetic moment
A magnetic moment dependent on temperature
Which of the following is an example of a diamagnetic material?
Iron
Cobalt
Aluminum
Nickel
A semiconductor in its purest form is called.......
Insulator
Superconductor
Intrinsic semiconductor
Extrinsic semiconductor
In a micro relay, the switch contacts are typically made of:
Copper
Silver
Gold
Aluminum
SI unit of resistivity is……..
Ω/m
Ω/m
Ω-m
m/Ω
The power rating of a resistor is measured in:
Watts
Ohms
Amps
Volts
Varistors are typically made from which material?
Copper
Silicon
Zinc oxide
Aluminum
The reciprocal of resistivity is known as
Specific resistance
conductivity
inductance
resistance
Which of the following is a common application of hybrid ICs?
Microcontrollers
Power amplifiers
Flash memory
Field-Programmable Gate Arrays (FPGAs)
What is the primary function of a resistor in an electronic circuit?
Store electrical energy
Amplify signals
Control or limit current flow
Generate voltage
A room temperature P-type material will have....
More of electrons
More of holes
Equal number of electrons and holes
none of these
LDRs are typically made from which material?
Copper
Silicon
Cadmium sulfide
Aluminum oxide
Which property of a dielectric material makes it suitable for use in capacitors?
High conductivity
Low permittivity
High permittivity
Low resistance
Resistance of given wire is directly proportional to…….
Length
area of cross-section
both a and b
none of these
What is a disadvantage of thick film ICs compared to thin film ICs?
Lower thermal stability
Limited design flexibility
Higher manufacturing cost
Reduced resistance to corrosion
The voltage level at which a VDR starts conducting significantly is known as:
Cutoff voltage
Breakdown voltage
Threshold voltage
Forward voltage
In addition to displays, OLED technology is also used for:
Heating systems
Automotive engines
Lighting panels
Satellite communication
Consider the energy level diagram of an intrinsic semiconductor. The Fermi level lies in the
Valence band
Forbidden band
Conduction band
It can be at any of the above locations depending upon the doping concentration and temperature
A P-type semiconductor results when
A pentavalent impurity is added to an intrinsic semiconductor
A trivalent impurity is added to an intrinsic semiconductor
Either a pentavalent or trivalent impurity is added to an intrinsic semiconductor
None of the above
What alternative term is sometimes used to refer to a Voltage Dependent Resistor?
Thermistor
Photocell
PTC resistor
MOV (Metal Oxide Varistor)
Which of the following is a characteristic of thick film resistors used in ICs?
High precision
Low temperature coefficient
Thick film resistors are not used in ICs
Low power handling capability
Resistance of wire is inversely proportional to…..
length
area of cross-section
both a and b
none of these
What is the standard unit of capacitance?
Ohm
Henry
Farad
Volt
In photo emissive materials, the emission of electrons occurs in response to:
Heat
Light
Pressure
Sound waves
The reverse bias voltage at which the PN junction breaks down and conducts heavily is called:
Threshold voltage
Forward voltage
Breakdown voltage
Operating voltage
In which application is an LDR commonly used?
Voltage regulation
Surge protection
Light sensing
Audio amplification
What is the typical temperature sensing range of a thermistor?
Below 0°C
0°C to 100°C
100°C to 500°C
Above 500°C
The process of intentionally adding impurities to a semiconductor is known as:
Smelting
Doping
Electroplating
Annealing
A doped semiconductor is also known as
Intrinsic semiconductor
Extrinsic semiconductor
Diffused semiconductor
None of the above
Thin film ICs are known for:
Lower cost
Higher performance
Larger size
Simplicity in fabrication
What are the two main types of Temperature Dependent Resistors?
PTC and NTC
LDR and VDR
CTR and STR
ZTR and QTR
Zener diodes are commonly used for:
Current amplification
Voltage regulation
Frequency modulation
Temperature sensing
Thin film ICs are known for:
Lower cost
Higher performance
Larger size
Simplicity in fabrication
What is the primary function of a Voltage Dependent Resistor (VDR)?
Amplify signals
Store electrical energy
Provide a constant resistance
Protect against voltage spikes
In a circuit with an NPN transistor, the voltage source connected to the collector is typically:
Positive
Negative
Floating
Alternating
Which color is associated with an LED that has a bandgap energy in the red part of the spectrum?
Blue
Green
Red
Yellow
In an OLED, light is emitted due to the process of:
Photoelectric effect
Electroluminescence
Photovoltaic effect
Thermionic emission
Which type of transistor has an N-type semiconductor sandwiched between P-type regions?
PNP
NPN
FET
JFET
Monolithic ICs find applications in:
Audio amplifiers
Microwave communication
Digital watches
All of the above
The magnetic susceptibility of diamagnetic materials is usually in the range of:
0 to 1
-1 to 0
-1 to -10
1 to 10
Which of the following expressions represents the relationship between resistance (R), resistivity (ρ), length (L), and cross-sectional area (A) of a uniform wire?
R = ρL/A
R = A/ρL
R = ρA/L
R = L/ρA
Which of the following is a characteristic of a good dielectric material?
High conductivity
Low breakdown voltage
Low permittivity
High dielectric strength
What is the primary purpose of an IC package?
To provide mechanical support to the IC
To protect the IC from environmental factors
To enhance the electrical performance of the IC
All of the above
Which of the following doping elements would not be suitable for converting intrinsic semiconductor?
Phosphorous
Indium
Antimony
Arsenic
