Q.1
14 Marks(a)
Define the terms: Torque, Power, Fuel Consumption
(b)
What do you mean by Electromagnetic interference?
(c)
Explain the Four stroke SI Engine, with suitable diagram.
Gujarat Technological UniversityWinter 2025 examination
GTU 3171112 Automotive Electronics Winter 2025 Question Paper & PDF
B.E. · EC Engineering · Semester 7 · Subject code 3171112
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 10:30 AM – 1:00 PM
- Questions
- 5 with internal choice
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Q.2
14 Marks(a)
Justify the need of electronics in Automobile.
(b)
Explain the effect of air fuel ratio on performance.
(c)
Explain Idle speed control with relevant diagram
OR
(c)
With neat diagram explain electronic ignition control system.
Q.3
14 Marks(a)
Explain following sensor 1. TAS 2. Reluctance position sensor 3.
Knock Sensor
(b)
Explain working of stepper motor as actuator.
(c)
Explain the modes of fuel control. Brief the digital engine control system.
OR
(a)
Explain following sensor 1. MAP 2. Air bag 3. Engine Crankshaft Angular Position Sensor
(b)
Explain working of brushless DC motor.
(c)
What is hall effect? Explain Position sensor using principal of hall effect. Compare with magnetic reluctance sensor.
Q.4
14 Marks(a)
What do you mean by Electronics Suspension system?
(b)
Explain Digital Engine control.
(c)
Explain CAN protocol in detail.
OR
(a)
Explain on board diagnosis system.
(b)
Differentiate Throttle body Injection and Multi port fuel injection system
(c)
Explain different buses used in automobile networks.
Q.5
14 Marks(a)
Differentiate hot spark plug from cold spark plug.
(b)
What are the major controller inputs and outputs from/to Engine? Show their connection between Engine and Controller.
(c)
Explain following:
1Antilock braking system
2Throttle Actuator
OR
(a)
Explain the care and maintenance of automotive batteries.
(b)
Explain low tire-pressure warning system with relevant diagrams.
(c)
Explain following:
1Electronic steering control
2Central locking system
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About this paper
Official Gujarat Technological University (GTU) examination paper for Automotive Electronics (Winter 2025, B.E. · EC Engineering, Sem 7). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.