BASIC ELECTRICAL ENGINEERING BEE 2nd Sem Diploma Paper PSBTE Exam/ECE/0064/May2011

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

`BEE DIPLOMA PSBTE MAY 2011 PAPER      `

# 1. Fill in the blanks :

1. 100 w bulb operates on 220 V .It draws current 100/220=0.45 A .

2. Filaments of electric bulbs are generally made of Tungsten.

3. The internal resistance of an ideal voltage source is Low.

4. A passive network is one which contains No sources of emf in it.

5. For max, power to transfer, internal resistance of the source should be equal to Load Resistance

6. In constant voltage source output voltage remains same as  Output Current Varies.

7. The unit of resistivity is Ohm per Metre .

8. Copper and silver are Conductive materials.

10. Ratio of max value to rms value is known as Peak Factor or Crest Factor.

11. A capacitor block DC Components .

12. In an RLC series circuit, during resonance the will be Impedance Will be Minimum.

13. Q-factor of a circuit is given by   Q = ƒr /BW   or Q=Resonant Frequency/Bandwidth

14. Inductive reactance XL is given by 2πFL.

15. Steam power plant uses heat energy generated from burning coal to produce electrical energy.

## SECTION-B

### Q2. Attempt any five questions.                                         5×6=30

1. State and explain Kirchhoffs Voltage Law.
2. State Nortan’ s theorem.
3. Discuss ideal current Source ?
4. Define M.M.F ,Reluctance ?
5.  Explain faraday’s law of electromagnetic induction.
6. Explain breifly primary and secondary Cells ?
7.  What are the causes and disadvantages of poor power Factor ?

## SECTION-C

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

2. How emf is induced self and mutually emf ?

3. Solve the circuit using Nortan’s theorem                                                                   4. Explain with the help of block diagram the steam power plant.

5. Find the equivalent resistance of the following network

OR

Define the following, with the help of suitable diagram

• Cycle
• Time period
• Frequency
• Amplitude
• Effective or rms value

## BASIC ELectrICALbEe DEC 2011 DIPLOMA PAPER SOLUTION

### Section a FILL IN THE BLANKS BASIC ELectrICALbEe DEC 2011 DIPLOMA PAPER SOLUTION

100 w bulb operates on 220 V .It draws current 100/220=0.45 A .

Filaments of electric bulbs are generally made of Tungsten

The internal resistance of an ideal voltage source is Low

A passive network is one which contains No sources of emf in it.

For max, power to transfer, internal resistance of the source should be equal to Load Resistance

In constant voltage source output voltage remains same as  Output Current Varies.

The unit of resistivity is Ohm per Metre

Copper and silver are Conductive materials.

Ratio of max value to rms value is known as Peak Factor or Crest Factor.

A capacitor block DC Components

In an RLC series circuit, during resonance the will be Impedance Will be Minimum.

Q-factor of a circuit is given by   Q = ƒr /BW   or Q=Resonant Frequency/Bandwidth

Inductive reactance XL is given by 2πFL.

Steam power plant uses heat energy generated from burning coal to produce electrical energy.

### Section B : BASIC ELectrICAL bEe DEC 2011 DIPLOMA PAPER SOLUTION

State Kirchhoffs Voltage Law.

Nortan’ s theorem.

ideal current Source

M.M.F ,Reluctance