SREENIVASA INSTITUTE of TECHNOLOGY and MANAGEMENT

STUDIES (autonomous)

ELECTRIC VEHICLES

Question bank

IV - B.TECH / VII - SEMESTER regulation: R20

Compiled by

FACULTY INCHARGE : A.KEERTHI

Designation : ASSISTANT PROFESSOR
Department : EEE
 SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES
(Autonomous)
DEPARTMENT of ELECTRICAL AND ELECTRONICS ENGINEERING
QUESTION BANK Electric vehicles(20EEE474)
IV B. Tech VII SEMESTER
ELECTRIC VEHICLES L T P C
2 0 0 2

Pre-requisites: A Course on Power system Engineering, Power Electronics

Course Educational Objectives:

1 Understand Electric and Hybrid Electric Vehicles
2 Study and analyze the Energy Storage for EV and HEV
3 Study and understand the concept of Electric Propulsion
4 Analyze and design the Electric and Hybrid Electric Vehicles
5 Study operation of Power Electronic Converter for Battery Charging.

UNIT –1 ELECTRIC AND HYBRID ELECTRIC VEHICLES

Configuration of Electric Vehicles, Performance of Electric Vehicles, Traction motor
characteristics, Tractive effort and Transmission requirement, Vehicle performance, Tractive
effort in normal driving, Energy consumption Concept of Hybrid Electric Drive Trains,
Architecture of Hybrid Electric Drive Trains, Series Hybrid Electric Drive Trains, Parallel hybrid
electric drive trains.
UNIT – 2: ENERGY STORAGE FOR EV AND HEV
Energy storage requirements, Battery parameters, Types of Batteries, Modeling of Battery, Fuel
Cell basic principle and operation, Types of Fuel Cells, PEMFC and its operation, Super
Capacitors.
UNIT – 3: ELECTRIC PROPULSION
EV consideration, DC motor drives and speed control, Induction motor drives, Permanent Magnet
Motor Drives, Switch Reluctance Motor Drive for Electric Vehicles, Configuration and control of
Drives.
UNIT – 4: DESIGN OF ELECTRIC AND HYBRID ELECTRIC VEHICLES
Series Hybrid Electric Drive Train Design: Operating patterns, control strategies, Sizing of major
components, power rating of traction motor, power rating of engine/generator, and design of PPS
Parallel Hybrid Electric Drive Train Design: Control strategies of parallel hybrid drive train, design
of engine power capacity, design of electric motor drive capacity, transmission design, and energy
storage design.
UNIT – 5: POWER ELECTRONIC CONVERTER FOR BATTERY CHARGING
Charging methods for battery, Termination methods, charging from grid, The Z- converter,
Isolated bidirectional DC-DC converter, Design of Z-converter for battery charging,
Highfrequency transformer based isolated charger topology, Transformer less topology.

2
 SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES
(Autonomous)
DEPARTMENT of ELECTRICAL AND ELECTRONICS ENGINEERING
QUESTION BANK Electric vehicles(20EEE474)

Course Outcomes:
SNO DESCRIPTION PO’S & PSO’S
CO.1 Understand Electric and Hybrid Electric Vehicles PO1,PO2,PO3
CO.2 Study and analyze the Energy Storage for EV and HEV PO1,PO2,PO3
CO.3 Study and understand the concept of Electric Propulsion PO1,PO2,PO3

CO.4 Analyze and design the Electric and Hybrid Electric Vehicles PO1,PO2,PO3

CO.5 Study operation of Power Electronic Converter for Battery Charging. PO1,PO2,PO3

Text Books:
1.CM. Ehsani, Y. Gao, S. Gay and Ali Emadi, Modern Electric,” Hybrid Electric, and Fuel Cell
Vehicles: Fundamentals, Theory, and Design", CRC Press, 2005.
2.Iqbal Husain, “Electric and Hybrid Vehicles: Design Fundamentals”, CRC Press, 2003.
REFERENCE BOOKS:
1. Sheldon S. Williamson, Energy Management Strategies for Electric and Plug-in Hybrid Electric
Vehicles, Springer, 2013.
2.C.C. Chan and K.T. Chau, Modern Electric Vehicle Technology, OXFORD University Press, 2001.
3.Chris Mi, M. Abul Masrur, David Wenzhong Gao, Hybrid Electric Vehicles Principles And
Applications With Practical Perspectives, Wiley Publication, 2011.

3
 SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES
(Autonomous)
DEPARTMENT of ELECTRICAL AND ELECTRONICS ENGINEERING
QUESTION BANK Electric vehicles(20EEE474)
QUESTION BANK
Question PO
Questions
No. Attainment
UNIT – 1: ELECTRIC AND HYBRID ELECTRIC VEHICLES
PART-A (Two Marks Questions)
1 Define rolling resistance. PO1
2 Define aero dynamic drag. PO1
3 What is tractive effort. PO1
4 Define speed ratio. PO1
5 What are the types subsystems in electric vehicle. PO1
6 Draw the diagram of primary electric vehicle. PO1
7 What are the types of electric vehicle. PO1
8 Compare electric vehicle and hybrid electric vehicle. PO1
9 What are the types of hybrid electric vehicle. PO1
10 What are the components of electric vehicle. PO1
11 Define clutch ,differentiator ,and vehicle controller. PO1
12 Draw the traction motor characteristics of electric vehicle. PO1

13
Define gradability ,maximum speed ,maximum cruising speed and PO1
acceleration time.
14 Draw the tractive effort and speed characteristics. PO1
15 Write the torque equation and velocity equation of electric vehicle. PO1
16 Define energy consumption. PO1
17 What are the operating modes of series hybrid electric drive train. PO1
18 What is pure engine mode and pure electric mode. PO1
19 What id regenerative. PO1
20 Define electric traction motor. PO1
PART-B (Ten Marks Questions)
1 Elucidate the general layout of electric vehicle. PO1, PO2
Draw the architecture of hybrid electric drive train. PO1, PO2,
2
PO4
3 What are the traction motor characteristics of electric vehicle and explain. PO1, PO2

4
Derive the expression for vehicle performance characteristics of electric PO1, PO2,
vehicle. PO4
Explain the different configuration of electric vehicle. PO1, PO2,
5
PO4
What is series hybrid electric drive train and explain with neat sketch. PO1, PO2,
6
PO4
What is parallel hybrid electric drive train and explain with neat sketch. PO1, PO2,
7
PO4
What are different configurations of parallel hybrid electric drive train. PO1, PO2,
8
PO4

Question PO
Questions
No. Attainment
UNIT – 2: ENERGY STORAGE FOR EV AND HEV

4
 SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES
(Autonomous)
DEPARTMENT of ELECTRICAL AND ELECTRONICS ENGINEERING
QUESTION BANK Electric vehicles(20EEE474)
PART-A (Two Marks Questions)
1 What is battery. PO1
2 What are the battery parameters. PO1
3 Mention energy storage requirements. PO1
4 What are the types of batteries in electric vehicle and hybrid electric vehicle. PO1
5 Define fuel cell. PO1
6 What are the types of fuel cell. PO1
7 Classify the lithium based batteries. PO1
8 What is lead acid battery. PO1
9 Classify the nickel based batteries. PO1
10 Define ultra capacitor. PO1
PART-B (Ten Marks Questions)
1 Explain the nickel based batteries. PO1, PO3
2 Explain the lithium based batteries. PO1, PO3
3 Explain the lead acid batteries. PO1, PO3
4 What are the types of battery models and explain. PO1, PO2,
PO3
5 Explain PEMFC with neat sketch. PO1, PO2,
PO3
What are the merits and demerits of the typical lead acid battery ?Also explain
PO1, PO2,
6 Working principle of a Li-ion battery with a neat sketch and necessary PO3
equation involved.
Define battery charge capacity with example. PO1, PO2,
7
PO3
Mention any two types of batteries. PO1, PO2,
8
PO3
Question PO
Questions
No. Attainment
UNIT – 3: ELECTRIC PROPULSION
PART-A (Two Marks Questions)
1 What are the types of DC motors. PO1
2 Give the example for commutator less device. PO1
3 Classify the topologies of power converter. PO1
4 Mention the hardware for electronic control. PO1
5 Mention the software for electronic control. PO1
6 Write the types of electric motors. PO1
7 What are the types of motor drives. PO1
8 What are the types of devices in power converter for electric vehicle. PO1
9 Define duty cycle. PO1
10 What are the control strategies of chopper. PO1

11
Comment on the suitability of AC and DC methods for electric and hybrid
PO1, PO3
electric applications.
12 What is meant by constant power speed ratio as applied to an electric motor. PO1
13 Justify the usage of PMSM in electric vehicle application. PO1, PO3

14
Compare the induction and BLDC motor with respect to electric vehicle
PO1, PO3
application.
15 Give the examples of commutator devices. PO1
16 What is the basic principle of induction motor. PO1

5
 SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES
(Autonomous)
DEPARTMENT of ELECTRICAL AND ELECTRONICS ENGINEERING
QUESTION BANK Electric vehicles(20EEE474)

17
What is meant by constant torque method speed ratio as applied in electric
PO1
vehicle.
18 Write the advantages of SRM. PO1
19 Mention the applications of BLDC Motor. PO1
20 Mention the applications of Induction motor. PO, PO3
PART-B (Ten Marks Questions)
Explain the control strategies of chopper. PO1, PO3,
1
PO4
What is the need of power device in motor? Explain the working principle of
PO1, PO3,
2 the power drive system used to switched reluctance motor with relevant PO4
sketch.
3
Explain the working principle and component involved in the control system PO1, PO3,
process of typical BLDC motor with relevant schematic sketch. PO4
How do you control speed of an induction motor. PO1, PO3,
4
PO4
5
Explain the working principle of Induction motor as applied in electric PO1, PO3,
vehicles. PO4
Explain the working principle of DC motor as applied in electric vehicles. PO1, PO3,
6
PO4
Compare BLDC motor and Switched Reluctance motor. PO1, PO3,
7
PO4
Mention the differences between commutator and commutator less devices. PO1, PO3,
8
PO4
Explain the Speed control methods of DC motor. PO1, PO3,
9
PO4
10 Explain the torque speed characteristics of SRM. PO1, PO3,
PO4

Question PO
Questions
No. Attainment
UNIT – 4: DESIGN OF ELECTRIC AND HYBRID ELECTRIC VEHICLES

PART-A (Two Marks Questions)

1 Define gradeability. PO1
2 Justify the need of transmission system in EV. PO1
3 What is peaking power source. PO1
4 What are the types of hybrid electric drive train. PO1, PO2
5 What is series hybrid drive train. PO1, PO2
6 What are the control strategies of series hybrid drive train. PO1, PO2
7 Mention the control strategies of parallel hybrid drive train. PO1, PO2
8 What is parallel hybrid drive train. PO1, PO2
9 What are the components of series hybrid electric drive train.
10 Mention the components of parallel hybrid electric drive train.
11 What is the function of motor controller.
12 What is traction motor.
PART-B (Ten Marks Questions)
What is the need of control system in hybrid vehicle? explain the process of
PO1, PO2,
1 energy control using energy management system in a typical series hybrid PO3,PO6
vehicle with a neat schematic sketch.

6
 SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES
(Autonomous)
DEPARTMENT of ELECTRICAL AND ELECTRONICS ENGINEERING
QUESTION BANK Electric vehicles(20EEE474)

2
Elaborate the overall power train architecture and components of the typical PO1, PO2,
electric scooter with relevant schematic sketch. PO3,PO6

3
Explain PO1, PO2,
Explain the sizing the power electronics to hybrid vehicle. PO3,PO6
4 Elaborate the control strategies of series hybrid electric drive train. PO1, PO2,
PO3,PO6
Elaborate the control strategies of parallel hybrid electric drive train. PO1, PO2,
5
PO3,PO6
What are the operation pattern of series hybrid electric drive train. PO1, PO2,
6
PO3,PO6
What are the operation pattern of parallel hybrid electric drive train. PO1, PO2,
7
PO3,PO6

Question PO
Questions
No. Attainment
UNIT – 5: POWER ELECTRONIC CONVERTER FOR BATTERY CHARGING

PART-A (Two Marks Questions)

1 Mention the charging methods of battery. PO1
2 What is wireless battery. PO1
3 What are the classifications of EV charger. PO1
4 What are the requirements of the EV charging system. PO1
5 What are the termination methods of battery. PO1
6 What is onboard charger. PO1
7 Define offboard charger. PO1
8 What is constant current method. PO1
9 What is constant voltage method. PO1
10 Draw the characteristics of constant current and constant voltage method. PO1
PART-B (Ten Marks Questions)
1 Explain the charging methods of battery as applied in electric vehicles. PO1, PO7
2 Termination methods of battery as applied in EV. PO1, PO7
3 How electric vehicle charging from grid explain. PO1, PO7
4 Discuss the working of isolated DC to DC converter. PO1, PO7
5 Explain the DC fast charging system. PO1, PO7
6 Explain constant voltage and constant current method of battery. PO1, PO7
7 Explain the Z converter as applied in EV and HEV. PO1, PO7

***ALL THE VERY BEST***