RGPV BE Question Paper of BE-104 Basic Electrical & Electronics Engineering December 2013 - Free Download
University / Exam Boad : Rajiv Gandhi Technical University, RGPV Bhopal
Subject Code of Question Paper : BE 104
Semester : I and II Semester Exams Paper
Question Paper Year : December 2013
Subject of Question Paper : Basic Electrical & Electronics Engineering
Time : Three Hours
Maximum Marks : 70
BE - 104
B.E. I & II Semester Examination, December 2013
Basic Electrical & Electronics Engineering
Time : Three Hours
Maximum Marks :70
note: Attempt all the questions. Every question has internal choice.
1. a) State and explain superposition theorem.
b) Calculate current through 5 ohm resistance using loop analysis.
OR
2. a) Define the following: 7
i) Average value ofAC voltage
ii) RMS value ofAC voltage
iii) Power factor
iv) Active power
v) Reactive power
vi) Apparent power
vii) Three phase balanced supply.
b) A coil of resistance 100 and inductance 0.1H is connected in series with 150p$
capacitor across a 200V, 50Hz supply calculate: 7
i) Inductive reactance
ii) Capacitive reactance
iii) Impedance
iv) Current
v) Power factor
vi) Voltage across the coil
vii) Voltage across capacitor.
3. a) Derive EMF equation tier single phase transformer 7
b) A single phase transionner is connected across 200V, 50Hz. supply. Number of
turns in primary is 500 while in secondary is 1000. the net cross sectional arra of
the core is 80cm2
= calculate:
i) Transformation Ratio.
ii) Maximum flux dencity
iii) EMF induced in secondary winding 7
OR
4. a) What quantities can be find out using open circuit test on I b transformer. Explain
how you can perform open circuit test on lep transformer in the laboratory. 7
b) A 100 KVA, 1000/10,000 V, 50Hz single phase transformer has an iron loss of 1100 w
the copper loss. With 5A in the high. Voltage winding is 400W. Calculate efficiency at
10O% normal load for p.f. 1.0 and 0.8. 7
5. a) Describe the constructional details of d.c. machine giving; suitable diagram. 7
b) What do you mean by separately excited and self excited d.c. generator sketch
following type of d.c. generator. 7
i) Shunt wound
ii) Series wound
iii) Compound generator
OR
6. Draw and explain Torque - slip characteristic of 3-phase induction.
7. a) State and prove Demorgan's theorem.
b) Write and explain truthtable of
i) NAND gate
ii) EX-OR gate.
OR
8. a) Draw and explain with the help of truth table working of J-K flip-flop.
b) Draw and explain 4 bit full adder circuit.
9. Explain operation of PN junction diode when it is :
i) Forward biase
ii) Reverse biase
OR
10. a) Explain the working of Transistor when it is operated in CE mode.
b) Explain in short application of transistor.
University / Exam Boad : Rajiv Gandhi Technical University, RGPV Bhopal
Subject Code of Question Paper : BE 104
Semester : I and II Semester Exams Paper
Question Paper Year : December 2013
Subject of Question Paper : Basic Electrical & Electronics Engineering
Time : Three Hours
Maximum Marks : 70
BE - 104
B.E. I & II Semester Examination, December 2013
Basic Electrical & Electronics Engineering
Time : Three Hours
Maximum Marks :70
note: Attempt all the questions. Every question has internal choice.
1. a) State and explain superposition theorem.
b) Calculate current through 5 ohm resistance using loop analysis.
OR
2. a) Define the following: 7
i) Average value ofAC voltage
ii) RMS value ofAC voltage
iii) Power factor
iv) Active power
v) Reactive power
vi) Apparent power
vii) Three phase balanced supply.
b) A coil of resistance 100 and inductance 0.1H is connected in series with 150p$
capacitor across a 200V, 50Hz supply calculate: 7
i) Inductive reactance
ii) Capacitive reactance
iii) Impedance
iv) Current
v) Power factor
vi) Voltage across the coil
vii) Voltage across capacitor.
3. a) Derive EMF equation tier single phase transformer 7
b) A single phase transionner is connected across 200V, 50Hz. supply. Number of
turns in primary is 500 while in secondary is 1000. the net cross sectional arra of
the core is 80cm2
= calculate:
i) Transformation Ratio.
ii) Maximum flux dencity
iii) EMF induced in secondary winding 7
OR
4. a) What quantities can be find out using open circuit test on I b transformer. Explain
how you can perform open circuit test on lep transformer in the laboratory. 7
b) A 100 KVA, 1000/10,000 V, 50Hz single phase transformer has an iron loss of 1100 w
the copper loss. With 5A in the high. Voltage winding is 400W. Calculate efficiency at
10O% normal load for p.f. 1.0 and 0.8. 7
5. a) Describe the constructional details of d.c. machine giving; suitable diagram. 7
b) What do you mean by separately excited and self excited d.c. generator sketch
following type of d.c. generator. 7
i) Shunt wound
ii) Series wound
iii) Compound generator
OR
6. Draw and explain Torque - slip characteristic of 3-phase induction.
7. a) State and prove Demorgan's theorem.
b) Write and explain truthtable of
i) NAND gate
ii) EX-OR gate.
OR
8. a) Draw and explain with the help of truth table working of J-K flip-flop.
b) Draw and explain 4 bit full adder circuit.
9. Explain operation of PN junction diode when it is :
i) Forward biase
ii) Reverse biase
OR
10. a) Explain the working of Transistor when it is operated in CE mode.
b) Explain in short application of transistor.
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