BE3252 Basic Electrical Electronics and Instrumentation Engineering Important Questions

BE3252 Basic Electrical Electronics and Instrumentation Engineering Important Questions

Unit 1 Part B

1. Verify Kirchoff’s voltage law and current law with typical circuit example.
2. 
   

3. What is the role of conductor, resistor, inductor and capacitor in electrical circuits? Explain with typical example for each.
4. Explain star and delta connection of three-phase power system with neat sketch.
5. Find the equivalent values of following elements
   (i) Three resistances in series
   (ii) Three inductances in series
   (iii) Three capacitances in series
6. 
   

   

Unit 2 Part B

1. Write short notes on the followings:
   (i) Magnetic field intensity,
   (ii) Mutual inductance,
   (iii) Importance of earthing.
2. What are the accessories needed for a domestic house wiring.
3. Briefly explain any two circuit breakers used in wiring.
4. Write short notes on the following:
   (i) Magneto motive force.
   (ii)Flux density.
   (iii) Circuit breaker.
5. Draw a simple wiring layout for domestic house hold appliances with necessary electrical accessories and distribution power points.
6. Classify circuit breaker
7. Explain the working of circuit breaker with required sketch.
8. Infer the functions earthing.
9. Classify the methods of earthing.

Unit 3 Part B

1. Explain with neat diagram the construction and the working principle of separately excited DC generator.
2. Distinguish between three-phase alternator and three-phase induction motor with their construction and working principle.
3. Draw the construction and working principle of DC motor.
4. Distinguish between three-phase induction motor and synchronous motor with their construction and working principle.
5. Discuss the constructional features of a DC generator.
6. Explain the working principle of a single phase transformer.
7. 
   

   

Unit 4 Part B

1. Draw and explain volt-ampere characteristics of PN junction diode and silicon controlled rectifier.
2. Which biasing is best suitable for bipolar junction transistor amplifier? Explain the same with the circuit.
3. Draw and explain the volt-ampere characteristics of Zener diode and bipolar junction transistor.
4. Draw and explain full-wave rectifier circuit without filter and its input-output waveforms.
5. Explain the working of a depletion type MOSFET with relevant sketches
6. Discuss the operation of common base configuration transistor.

Unit 5 Part B

1. Write short notes on the followings:
   (i) Solenoid.
   (ii) Proximity sensor.
   (iii) Optical transducer.
2. Write short notes on the followings:
   (i)Photo sensor.
   (ii) Hall effect.
   (iii) Strain gauge.
3. Explain the role of sensor and transducer in industrial application with typical example for each.
4. Write short notes on the following:
   (i) Actuator
   (ii) Limit switch
   (iii) LVDT
5. Infer the output of LVDT under three different cases (i) no displacement (ii) upward displacement (iii) downward displacement.
6. Explain the operation of optical encoder with a neat sketch.