ArulmiguMeenakshi Amman College of Engineering
Vadamavandal-604410.
Important questions and answers
EE25C04-Basic Electronics and Electrical Engineering
Prepared by
V.Umapathy,
Prof. /Mech.
S.No Question Answer
Syllabus
S.No. Describtion
V.
1 Basic Electronics: Passive and active components – Resistors, Capacitors, Inductors-
U
Types, features and specification, Energy band diagram of conductors, semiconductor,
m
insulator – Intrinsic & extrinsic semiconductor - types. PN junction diode – zener
diode.
ap
Activities: VI characteristics of PN junction and Zener diode.
2 Electrical Machines: Construction, Principle of Operation, Basic Equations and
at
Applications - DC Generators, DC Motors, Single Phase Transformer, Single phase
hy
Induction Motor, Three phase Induction Motor, Three phase Alternator, Stepper and
BLDC motors.
,P
Activities: Demonstration of Electrical Machines.
3 Measurements and Instrumentation: Functional elements of an instrument,
ro
Standards and calibration, Operating Principle, types - Moving Coil and Moving Iron
f./
meters, Measurement of three phase power, Energy Meter, Instrument Transformers-
CT and PT, DSO- Block diagram- Data acquisition.
M
Activities: Demonstration of measuring equipment’s
ec
4 Basics of Power Systems: Power system structure -Generation, Transmission and
distribution , Various voltage levels, Earthing – methods of earthing, protective
h.
devices- switch fuse unit- Miniature circuit breaker- moulded case circuit breaker-
earth leakage circuit breaker, safety precautions and First Aid
Activities: Demonstration of Earthing and safety precautions in electrical circuits
5 Sensors and Transducers
Solenoids, electro-pneumatic systems, proximity sensors, limit switches, piezoelectric,
hall effect, photo sensors, Strain gauge, LVDT, piezo electric crystals, differential
pressure transducer, optical and digital transducers, Smart sensors, Thermal Imagers
Unit-I
, Basic Electronics
Two mark Question and Answers
1. Basic Electronics: Basic Concepts
1. Passive and Active Components:
- Passive Components: Resistors, Capacitors, Inductors
- Active Components: Diodes, Transistors, Integrated Circuits
2. Resistors:
- Types: Carbon Film, Metal Film, Wire Wound, Variable Resistors (Potentiometers)
V.
- Features: Resistance Value, Power Rating, Tolerance
U
- Specification: Ohms (Ω), Watts (W)
m
3. Capacitors:
ap
- Types: Ceramic, Electrolytic, Film, Variable Capacitors
at
- Features: Capacitance Value, Voltage Rating, Tolerance
hy
- Specification: Farads (F), Volts (V)
,P
4. Inductors:
ro
- Types: Air Core, Iron Core, Ferrite Core, Variable Inductors
f./
- Features: Inductance Value, Current Rating, Tolerance
- Specification: Henrys (H), y (admittance)
M
ec
5. Energy Band Diagram:
h.
- Conductors: Overlapping valence and conduction bands
- Semiconductors: Small energy gap between valence and conduction bands
- Insulators: Large energy gap between valence and conduction bands
6. Semiconductors:
- Intrinsic Semiconductor: Pure semiconductor material (e.g., Silicon)
- Extrinsic Semiconductor: Doped semiconductor material (e.g., Silicon with Phosphorus
or Boron)
- Types: N-type (donor impurities), P-type (acceptor impurities)
,7. PN Junction Diode:
- Formation: Junction between P-type and N-type semiconductor materials
- Operation: Allows current flow in one direction (forward bias), blocks current flow in
the other direction (reverse bias)
8. Zener Diode:
- Operation: Allows current flow in the reverse direction when the voltage exceeds a
certain threshold (Zener voltage)
- Application: Voltage regulation, overvoltage protection
V.
Important 2-Marks Questions and Answers
U
1. What are passive and active components?
m
ap
Passive components: Resistors, Capacitors, Inductors
Active components: Diodes, Transistors, Integrated Circuits
at
hy
2. What is the function of a resistor?
,P
A resistor is used to limit the flow of current in a circuit.
ro
3. What are the types of capacitors?
f./
Ceramic, Electrolytic, Film, Variable Capacitors
M
ec
4. What is the difference between intrinsic and extrinsic semiconductors?
h.
Intrinsic semiconductor: Pure semiconductor material
Extrinsic semiconductor: Doped semiconductor material
5. What is the function of a resistor?
A PN junction diode is a device that allows current flow in one direction and blocks
current flow in the other direction.
6. What is the application of a Zener diode?
Voltage regulation, overvoltage protection
, 7. What is the energy band diagram of a conductor?
Overlapping valence and conduction bands
8. What is the difference between N-type and P-type semiconductors?
N-type: Donor impurities, excess electrons
P-type: Acceptor impurities, excess holes
9. What is the specification of a resistor?
V.
Ohms (Ω), Watts (W)
U
10. What is the function of an inductor?
m
ap
An inductor is used to store energy in a magnetic field.
at
11. What are the types of resistors?
hy
Carbon Film, Metal Film, Wire Wound, Variable Resistors (Potentiometers)
,P
12. What is the difference between a capacitor and an inductor?
ro
Capacitor: Stores energy in an electric field
f./
Inductor: Stores energy in a magnetic field
M
13 and 15 Marks QA
ec
2. Explain the types of resistors and their features.
h.
Vadamavandal-604410.
Important questions and answers
EE25C04-Basic Electronics and Electrical Engineering
Prepared by
V.Umapathy,
Prof. /Mech.
S.No Question Answer
Syllabus
S.No. Describtion
V.
1 Basic Electronics: Passive and active components – Resistors, Capacitors, Inductors-
U
Types, features and specification, Energy band diagram of conductors, semiconductor,
m
insulator – Intrinsic & extrinsic semiconductor - types. PN junction diode – zener
diode.
ap
Activities: VI characteristics of PN junction and Zener diode.
2 Electrical Machines: Construction, Principle of Operation, Basic Equations and
at
Applications - DC Generators, DC Motors, Single Phase Transformer, Single phase
hy
Induction Motor, Three phase Induction Motor, Three phase Alternator, Stepper and
BLDC motors.
,P
Activities: Demonstration of Electrical Machines.
3 Measurements and Instrumentation: Functional elements of an instrument,
ro
Standards and calibration, Operating Principle, types - Moving Coil and Moving Iron
f./
meters, Measurement of three phase power, Energy Meter, Instrument Transformers-
CT and PT, DSO- Block diagram- Data acquisition.
M
Activities: Demonstration of measuring equipment’s
ec
4 Basics of Power Systems: Power system structure -Generation, Transmission and
distribution , Various voltage levels, Earthing – methods of earthing, protective
h.
devices- switch fuse unit- Miniature circuit breaker- moulded case circuit breaker-
earth leakage circuit breaker, safety precautions and First Aid
Activities: Demonstration of Earthing and safety precautions in electrical circuits
5 Sensors and Transducers
Solenoids, electro-pneumatic systems, proximity sensors, limit switches, piezoelectric,
hall effect, photo sensors, Strain gauge, LVDT, piezo electric crystals, differential
pressure transducer, optical and digital transducers, Smart sensors, Thermal Imagers
Unit-I
, Basic Electronics
Two mark Question and Answers
1. Basic Electronics: Basic Concepts
1. Passive and Active Components:
- Passive Components: Resistors, Capacitors, Inductors
- Active Components: Diodes, Transistors, Integrated Circuits
2. Resistors:
- Types: Carbon Film, Metal Film, Wire Wound, Variable Resistors (Potentiometers)
V.
- Features: Resistance Value, Power Rating, Tolerance
U
- Specification: Ohms (Ω), Watts (W)
m
3. Capacitors:
ap
- Types: Ceramic, Electrolytic, Film, Variable Capacitors
at
- Features: Capacitance Value, Voltage Rating, Tolerance
hy
- Specification: Farads (F), Volts (V)
,P
4. Inductors:
ro
- Types: Air Core, Iron Core, Ferrite Core, Variable Inductors
f./
- Features: Inductance Value, Current Rating, Tolerance
- Specification: Henrys (H), y (admittance)
M
ec
5. Energy Band Diagram:
h.
- Conductors: Overlapping valence and conduction bands
- Semiconductors: Small energy gap between valence and conduction bands
- Insulators: Large energy gap between valence and conduction bands
6. Semiconductors:
- Intrinsic Semiconductor: Pure semiconductor material (e.g., Silicon)
- Extrinsic Semiconductor: Doped semiconductor material (e.g., Silicon with Phosphorus
or Boron)
- Types: N-type (donor impurities), P-type (acceptor impurities)
,7. PN Junction Diode:
- Formation: Junction between P-type and N-type semiconductor materials
- Operation: Allows current flow in one direction (forward bias), blocks current flow in
the other direction (reverse bias)
8. Zener Diode:
- Operation: Allows current flow in the reverse direction when the voltage exceeds a
certain threshold (Zener voltage)
- Application: Voltage regulation, overvoltage protection
V.
Important 2-Marks Questions and Answers
U
1. What are passive and active components?
m
ap
Passive components: Resistors, Capacitors, Inductors
Active components: Diodes, Transistors, Integrated Circuits
at
hy
2. What is the function of a resistor?
,P
A resistor is used to limit the flow of current in a circuit.
ro
3. What are the types of capacitors?
f./
Ceramic, Electrolytic, Film, Variable Capacitors
M
ec
4. What is the difference between intrinsic and extrinsic semiconductors?
h.
Intrinsic semiconductor: Pure semiconductor material
Extrinsic semiconductor: Doped semiconductor material
5. What is the function of a resistor?
A PN junction diode is a device that allows current flow in one direction and blocks
current flow in the other direction.
6. What is the application of a Zener diode?
Voltage regulation, overvoltage protection
, 7. What is the energy band diagram of a conductor?
Overlapping valence and conduction bands
8. What is the difference between N-type and P-type semiconductors?
N-type: Donor impurities, excess electrons
P-type: Acceptor impurities, excess holes
9. What is the specification of a resistor?
V.
Ohms (Ω), Watts (W)
U
10. What is the function of an inductor?
m
ap
An inductor is used to store energy in a magnetic field.
at
11. What are the types of resistors?
hy
Carbon Film, Metal Film, Wire Wound, Variable Resistors (Potentiometers)
,P
12. What is the difference between a capacitor and an inductor?
ro
Capacitor: Stores energy in an electric field
f./
Inductor: Stores energy in a magnetic field
M
13 and 15 Marks QA
ec
2. Explain the types of resistors and their features.
h.
