Question Paper University : Jawaharlal Nehru Technlogical University, Kakinada.
Course : B.Tech 1st year.
Question Paper Subject code : R05012302
Question Paper Subject : BASIC ELECTRICAL AND ELECTRONICS ENGINEERING.
Year of Exam : June 2011.
Question Paper Attachment : Texts
Question Paper Version : Type Version.
I B.TECH – EXAMINATIONS, JUNE - 2011
BASIC ELECTRICAL AND ELECTRONICS ENGINEERING
(BIOTECHNOLOGY)
Time: 3 hours Max.Marks:80
Answer any FIVE questions
All questions carry equal marks
- - -
1.a) Write down the expression for the instantaneous power, and hence derive the equation for the average power.
b) A series R-L-C circuit consists of 100 ohms resistor and an inductor of 0.318 Henry and a capacitor of unknown value. This circuit is supplied by 230V, 50 HZ supply and draws a current of 2.3 ohms, and the current is in phase with the supply voltage. Find i) the value of the capacitance, and the power supplied by the source. [8+8]
2.a) Derive the equation for the voltage generated in a d.c generator.
b) A 2 pole d.c generator has 200 conductors on its armature. It is driven by a prime mover at a constant speed of 600 r.p.m. If the flux per pole is 0.1 wb, calculate the emf generated. [8+8]
3. With a neat sketch explain in detail moving coil attraction type instrument. [16]
4.a) Compare Half wave, Center tapped full wave and Bridge rectifiers.
b) Explain the following terms:
i) Ripple factor ii) Peak Inverse voltage
iii) Efficiency iv) TUF
v) Form factor v) Peak factor. [6+10]
5.a) Draw and explain UJT characteristics also give their applications.
b) Draw a family of drain characteristics and mutual characteristics of an n-channel FET and explain the shape of the curves qualitatively. [8+8]
6.a) Draw the circuit of a current shunt feedback amplifier and explain.
b) An amplifier has a gain of 10,000 without feedback. The gain is reduced to 50 with negative feedback. Find the feedback factor.
c) Explain the principle of operations of Tuned amplifiers. [4+4+8]
7.a) With the help of neat circuit diagram, explain the following applications of OP-AMP:
i) Multiplier ii) Differentiator iii) Subtractor.
b) Design a scaling adder circuit using OP-AMP, to give the output voltage
VO = -(3V1 + 4V2 + 5V3), where V1, V2 and V3 are the input voltages given to the circuit. [10+6]
8.a) With a circuit diagram, explain Counter type A-to-D converter.
b) Give the Boolean functions: F x = y + x′y′ ′ + y z
i) Implement with only OR and NOT gates.
ii) Implement with only AND and NOT gates. [8+8]
Course : B.Tech 1st year.
Question Paper Subject code : R05012302
Question Paper Subject : BASIC ELECTRICAL AND ELECTRONICS ENGINEERING.
Year of Exam : June 2011.
Question Paper Attachment : Texts
Question Paper Version : Type Version.
I B.TECH – EXAMINATIONS, JUNE - 2011
BASIC ELECTRICAL AND ELECTRONICS ENGINEERING
(BIOTECHNOLOGY)
Time: 3 hours Max.Marks:80
Answer any FIVE questions
All questions carry equal marks
- - -
1.a) Write down the expression for the instantaneous power, and hence derive the equation for the average power.
b) A series R-L-C circuit consists of 100 ohms resistor and an inductor of 0.318 Henry and a capacitor of unknown value. This circuit is supplied by 230V, 50 HZ supply and draws a current of 2.3 ohms, and the current is in phase with the supply voltage. Find i) the value of the capacitance, and the power supplied by the source. [8+8]
2.a) Derive the equation for the voltage generated in a d.c generator.
b) A 2 pole d.c generator has 200 conductors on its armature. It is driven by a prime mover at a constant speed of 600 r.p.m. If the flux per pole is 0.1 wb, calculate the emf generated. [8+8]
3. With a neat sketch explain in detail moving coil attraction type instrument. [16]
4.a) Compare Half wave, Center tapped full wave and Bridge rectifiers.
b) Explain the following terms:
i) Ripple factor ii) Peak Inverse voltage
iii) Efficiency iv) TUF
v) Form factor v) Peak factor. [6+10]
5.a) Draw and explain UJT characteristics also give their applications.
b) Draw a family of drain characteristics and mutual characteristics of an n-channel FET and explain the shape of the curves qualitatively. [8+8]
6.a) Draw the circuit of a current shunt feedback amplifier and explain.
b) An amplifier has a gain of 10,000 without feedback. The gain is reduced to 50 with negative feedback. Find the feedback factor.
c) Explain the principle of operations of Tuned amplifiers. [4+4+8]
7.a) With the help of neat circuit diagram, explain the following applications of OP-AMP:
i) Multiplier ii) Differentiator iii) Subtractor.
b) Design a scaling adder circuit using OP-AMP, to give the output voltage
VO = -(3V1 + 4V2 + 5V3), where V1, V2 and V3 are the input voltages given to the circuit. [10+6]
8.a) With a circuit diagram, explain Counter type A-to-D converter.
b) Give the Boolean functions: F x = y + x′y′ ′ + y z
i) Implement with only OR and NOT gates.
ii) Implement with only AND and NOT gates. [8+8]
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