BASIC ELECTRICAL ENGINEERING BEE 2nd Sem Exam/ECE/CS/6125/2561/0064/Dec 2011

BASIC ELECTRICAL ENGINEERING 2nd Sem Diploma Exam/ECE/0064/Dec 2018

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`BEE DIPLOMA PSBTE DEC 2018 PAPERÂ  Â    `

# Â  Â  Â  Â  1. Fill in the blanks :

1. In nuclear power generation Coals is main component/parts.
2. The S.I. unit of susceptance is Simens.Â  Â Â
3. An ideal current source has Infinity Â internal resistance.
4. Generator converts mechanical energy into electrical energy.
5. Kirchhoffâ€™s voltage law is applied to Linear Device
6. In an ac circuit, the reciprocal of impedance is called Admittance.Â Â
7. The power drawn by pure inductance is 0 Zero
9. The electrical rating of an appliance is given in Voltage and Current.
10. The commercial unit of electrical energy is Kwh .
11. Active Network contains one or more than one source of emf.
12. The emf induced in a coil due to change of current in the neighboring coil is called Mutually Induced emf.Â
13. Reluctance in magnetic circuit corresponds to ResistanceÂ  in electric Circuit.
14. Frequency of D.C voltage is 0 Zero .
15. Capacity of battery is measured in Ah.
###### Q2. Attempt any five questions.Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â 5×6=30
1. Give comparison between electric and magnetic Circuits.
2. Draw and explain phasor diagram for the R-L series Circuit.
3. What is constant current source and draw characteristics of ideal current source?
4. A resistor of 100 ohm is connected in series with a 56 micro – farad capacitor to a supply at 230V, 50Hz. Find the impedance, the current, tha phase angle, the pf and the voltage across resistor and Capacitor ?
5. State Faradayâ€™ laws of electromagnetic induction.
6. Estimate the inductance of a solenoid of 2500 turns wound uniformly over a length of 0.5 meter on a cylindrical paper tube 4 cm in diameter. The medium is Air.
7. Define the (a) Form factor b) Q- factor c) True power
###### Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â SECTION-C

Q3. Attempt any three questions.Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  3×10=30

Â  Â  Â

1. Explain with neat sketch, how electricity can be generated from coal in a thermal power ?
2. State and explain Nortonâ€™s theorem. Show that the theorem is just the converse ofÂ  Â  Â  Â  Theveninâ€™s theorem ?
3. Draw and explain the construction of lead acid battery in detail and its Application ?
4. Explain R-C series circuit with the help of Phasor diagram in Details ?
5. Write a short note on the following. (any two)
1. Series ResonanceÂ
2. Kirchhoff s lawÂ Â
3. Â Chassis and GroundÂ

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## BASIC ELECTRICAL ENGINEERING DEC 2018 DIPLOMA PAPER SOLUTION

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### Section b solved bee paper

State Faradayâ€™ laws of electromagnetic induction.

1. Estimate the inductance of a solenoid of 2500 turns wound uniformly over a length of 0.5 meter on a cylindrical paper tube 4 cm in diameter. The medium is Air.
1. Define the (a) Form factor b) Q- factor c) True power

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### Section c solved bee paper

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