Winter 2014 Applied Electrical and Electronic Engineering Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma Engineering - SEMESTER–III • EXAMINATION – WINTER • 2014
Subject Code: 3331905 Date: 05-12-2014
Subject Name: Applied Electrical and Electronic Engineering
Time: 10:30 am - 01:00 pm Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is considered to be Authentic.

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Q.1 Answer any seven out of ten. 14

1. What is difference between work & power?

2. What is single pole two way switch?

3. Give two advantages of autotransformer.

4. What is the function of earthing?

5. What is voltage regulation?

6. What is the function of commutator in DC generator?

7. Give limitations of ohms law.

8. What is PVC wire?

9. Give four conditions for ideal transformer.

10. What is rectifier efficiency?

Q.2 (a) Give construction of MCB & its working during fault condition. 03

OR

(a) Draw & explain the block diagram of optical fiber telecommunication. 03

(b) Explain the working of shaded pole single phase induction motor. 03

OR

(b) Give the construction of stator and slip ring type rotor of three phase induction motor. 03

(c) Explain the factors affecting the resistance of the conducting material. 04

OR

(c) Prove that =0.707 . 04

(d) Draw & explain the connection diagram of wattmeter. 04

OR

(d) Draw & explain the connection diagram of energy meter. 04

Q.3 (a) Draw & explain block diagram of UPS. 03

OR

(a) Give construction & working of Diac. 03

(b) Compare core & shell type of transformer. 03

OR

(b) Explain the construction of drag cup type AC servo motor. 03

© Compare cylindrical & projected pole type rotor. 04

OR

© Explain the working principal of DC motor. 04

(d) Prove = for star connection. 04

OR

(d) Give advantages of three phase system over single phase system. 04

Q.4 (a) How earth resistance is measured by voltmeter –ammeter method? 03

OR

(a) Give construction of optical fibre. 03

(b) Draw & explain the block diagram of microcontroller. 04

OR

(b) Explain the working of NPN transistor. 04

© Explain the different types of cables. 07

Q.5 (a) Explain construction of synchronous motor. 04

(b) Explain unshielded & shielded type of twisted pair cables. 04

© Why optocouplers are used? 03

(d) Give construction & working of full wave rectifier. 03

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