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

BEE DIPLOMA PSBTE DEC 2018PAPER

###### Duration : 3 Hrs M.Marks : 75 **SECTION A**

** 1. Fill in the blanks :**

- In nuclear power generation
**Coals**is main component/parts. - The S.I. unit of susceptance is
**Simens.** - An ideal current source has
**Infinity**internal resistance. **Generator**converts mechanical energy into electrical energy.- Kirchhoff’s voltage law is applied to
**Linear Device** - In an ac circuit, the reciprocal of impedance is called
**Admittance.** - The power drawn by pure inductance is
**0 Zero** - In a lead acid battery positive plates are made of
**Lead.** - The electrical rating of an appliance is given in
**Voltage and Current.** - The commercial unit of electrical energy is
**Kwh .** **Active**Network contains one or more than one source of emf.- The emf induced in a coil due to change of current in the neighboring coil is called
**Mutually Induced emf.** - Reluctance in magnetic circuit corresponds to
**Resistance**in electric Circuit. - Frequency of D.C voltage is
**0 Zero**. - Capacity of battery is measured in
**Ah**.

###### **SECTION-B**

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

- Give comparison between electric and magnetic Circuits.
- Draw and explain phasor diagram for the R-L series Circuit.
- What is constant current source and draw characteristics of ideal current source?
- 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 ?
- State Faraday’ laws of electromagnetic induction.
- 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.
- Define the (a) Form factor b) Q- factor c) True power

###### ** SECTION-C**

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

** **

- Explain the Differentiate Between FET and BJT?
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- Explain with neat sketch, how electricity can be generated from coal in a thermal power ?
- State and explain Norton’s theorem. Show that the theorem is just the converse of Thevenin’s theorem ?
- Draw and explain the construction of lead acid battery in detail and its Application ?
- Explain R-C series circuit with the help of Phasor diagram in Details ?
- Write a short note on the following.
**(any two)**- Series Resonance
- Kirchhoff s law
- Chassis and Ground

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## BASIC ELECTRICAL ENGINEERING DEC 2018 DIPLOMA PAPER SOLUTION

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### Section b solved bee paper

State Faraday’ laws of electromagnetic induction.

- 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.

- Define the (a) Form factor b) Q- factor c) True power

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### Section c solved bee paper

Kirchhoff s Law

Chassis and ground

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