Code No: R05220301

R05

Set No. 2

in

II B.Tech II Semester Examinations,December 2010 BASIC ELECTRONICS Common to Mechanical Engineering, Production Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) List different methods of turning-on of SCR and explain one of the methods.

[10+6]

ld .

(b) Discuss important features of TRIAC.

2. (a) Draw the circuit of Hartley oscillator employing transistor and explain the working of it. Derive the expression for frequency of oscillation fo .

or

(b) Calculate the frequency of oscillation of a transistor Hartley oscillator having L1 = 25 µH, L2 = 100 µ H, Mutual Inductance M = 20 µH. and C =100 p f. [10+6] 3. (a) Describe the features of 8085 CPU?

(b) Explain various functions of control unit.

[8+8]

uW

4. (a) Discuss with mathematical expressions, how the negative feedback in amplifiers reduces the distortion and increases the band width of the amplifier. (b) Calculate

i. voltage gain ii. output impedance. iii. Band width of a feedback amplifier with parameters of the internal amplifier as A=250, Z0 =30 k Ω, Bandwidth = 50 kHz and having feedback factor β =0.02. [8+8]

nt

5. (a) Explain the concept of “ hole” in a semi conductor. (b) Explain the difference between Ideal Diode and commercial diode with the help of V-I Characteristics .

Aj

(c) Draw the circuit of Half wave rectifier with L- section filter and explain the working of it. [4+4+8]

6. (a) Explain why the transistors are current sensitive. (b) Draw the circuit diagram of CB amplifier with an NPN transistor and explain the working of it. (c) A transistor has α = 0.98. The transistor is connected with its emitter grounded. If the base current is changed by 0.2 mA, calculate the change in collector current. [3+8+5]

7. (a) Classify timers according to the function and the techniques used.

1

Code No: R05220301

R05

Set No. 2

(b) Draw the circuit and explain the working of “Magnetic Energy Storage Welder”. [8+8] 8. (a) Explain the application of Dielectric heating for i. wood gluing and ii. pre heating of Plastic Preforms.

in

(b) Give the necessary block diagram and explain the working of Pulse echo ultrasonic flaw detector. [8+8]

Aj

nt

uW

or

ld .

?????

2

Code No: R05220301

R05

Set No. 4

in

II B.Tech II Semester Examinations,December 2010 BASIC ELECTRONICS Common to Mechanical Engineering, Production Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Discuss with mathematical expressions, how the negative feedback in amplifiers reduces the distortion and increases the band width of the amplifier.

ld .

(b) Calculate

or

i. voltage gain ii. output impedance. iii. Band width of a feedback amplifier with parameters of the internal amplifier as A=250, Z0 =30 k Ω, Bandwidth = 50 kHz and having feedback factor β =0.02. [8+8] 2. (a) Explain the concept of “ hole” in a semi conductor.

(b) Explain the difference between Ideal Diode and commercial diode with the help of V-I Characteristics .

uW

(c) Draw the circuit of Half wave rectifier with L- section filter and explain the working of it. [4+4+8] 3. (a) Describe the features of 8085 CPU?

(b) Explain various functions of control unit.

[8+8]

4. (a) Draw the circuit of Hartley oscillator employing transistor and explain the working of it. Derive the expression for frequency of oscillation fo .

nt

(b) Calculate the frequency of oscillation of a transistor Hartley oscillator having L1 = 25 µH, L2 = 100 µ H, Mutual Inductance M = 20 µH. and C =100 p f. [10+6]

5. (a) Explain why the transistors are current sensitive.

Aj

(b) Draw the circuit diagram of CB amplifier with an NPN transistor and explain the working of it. (c) A transistor has α = 0.98. The transistor is connected with its emitter grounded. If the base current is changed by 0.2 mA, calculate the change in collector current. [3+8+5]

6. (a) Explain the application of Dielectric heating for i. wood gluing and ii. pre heating of Plastic Preforms.

(b) Give the necessary block diagram and explain the working of Pulse echo ultrasonic flaw detector. [8+8] 3

Code No: R05220301

R05

Set No. 4

7. (a) Classify timers according to the function and the techniques used. (b) Draw the circuit and explain the working of “Magnetic Energy Storage Welder”. [8+8] 8. (a) List different methods of turning-on of SCR and explain one of the methods. [10+6]

in

(b) Discuss important features of TRIAC.

Aj

nt

uW

or

ld .

?????

4

Code No: R05220301

R05

Set No. 1

1. (a) Explain why the transistors are current sensitive.

in

II B.Tech II Semester Examinations,December 2010 BASIC ELECTRONICS Common to Mechanical Engineering, Production Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ?????

ld .

(b) Draw the circuit diagram of CB amplifier with an NPN transistor and explain the working of it.

(c) A transistor has α = 0.98. The transistor is connected with its emitter grounded. If the base current is changed by 0.2 mA, calculate the change in collector current. [3+8+5]

(b) Calculate

or

2. (a) Discuss with mathematical expressions, how the negative feedback in amplifiers reduces the distortion and increases the band width of the amplifier.

uW

i. voltage gain ii. output impedance. iii. Band width of a feedback amplifier with parameters of the internal amplifier as A=250, Z0 =30 k Ω, Bandwidth = 50 kHz and having feedback factor β =0.02. [8+8] 3. (a) Explain the application of Dielectric heating for i. wood gluing and ii. pre heating of Plastic Preforms.

nt

(b) Give the necessary block diagram and explain the working of Pulse echo ultrasonic flaw detector. [8+8]

4. (a) Explain the concept of “ hole” in a semi conductor. (b) Explain the difference between Ideal Diode and commercial diode with the help of V-I Characteristics .

Aj

(c) Draw the circuit of Half wave rectifier with L- section filter and explain the working of it. [4+4+8]

5. (a) Classify timers according to the function and the techniques used. (b) Draw the circuit and explain the working of “Magnetic Energy Storage Welder”. [8+8]

6. (a) Describe the features of 8085 CPU? (b) Explain various functions of control unit.

5

[8+8]

Code No: R05220301

R05

Set No. 1

7. (a) Draw the circuit of Hartley oscillator employing transistor and explain the working of it. Derive the expression for frequency of oscillation fo . (b) Calculate the frequency of oscillation of a transistor Hartley oscillator having L1 = 25 µH, L2 = 100 µ H, Mutual Inductance M = 20 µH. and C =100 p f. [10+6]

in

8. (a) List different methods of turning-on of SCR and explain one of the methods. (b) Discuss important features of TRIAC.

[10+6]

Aj

nt

uW

or

ld .

?????

6

Code No: R05220301

R05

Set No. 3

i. wood gluing and ii. pre heating of Plastic Preforms.

ld .

1. (a) Explain the application of Dielectric heating for

in

II B.Tech II Semester Examinations,December 2010 BASIC ELECTRONICS Common to Mechanical Engineering, Production Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ?????

(b) Give the necessary block diagram and explain the working of Pulse echo ultrasonic flaw detector. [8+8]

(b) Calculate

or

2. (a) Discuss with mathematical expressions, how the negative feedback in amplifiers reduces the distortion and increases the band width of the amplifier.

uW

i. voltage gain ii. output impedance. iii. Band width of a feedback amplifier with parameters of the internal amplifier as A=250, Z0 =30 k Ω, Bandwidth = 50 kHz and having feedback factor β =0.02. [8+8] 3. (a) Describe the features of 8085 CPU?

(b) Explain various functions of control unit.

[8+8]

4. (a) Classify timers according to the function and the techniques used.

nt

(b) Draw the circuit and explain the working of “Magnetic Energy Storage Welder”. [8+8] 5. (a) Draw the circuit of Hartley oscillator employing transistor and explain the working of it. Derive the expression for frequency of oscillation fo .

Aj

(b) Calculate the frequency of oscillation of a transistor Hartley oscillator having L1 = 25 µH, L2 = 100 µ H, Mutual Inductance M = 20 µH. and C =100 p f. [10+6]

6. (a) List different methods of turning-on of SCR and explain one of the methods. (b) Discuss important features of TRIAC.

[10+6]

7. (a) Explain the concept of “ hole” in a semi conductor. (b) Explain the difference between Ideal Diode and commercial diode with the help of V-I Characteristics . (c) Draw the circuit of Half wave rectifier with L- section filter and explain the working of it. [4+4+8] 7

Code No: R05220301

R05

Set No. 3

8. (a) Explain why the transistors are current sensitive. (b) Draw the circuit diagram of CB amplifier with an NPN transistor and explain the working of it.

in

(c) A transistor has α = 0.98. The transistor is connected with its emitter grounded. If the base current is changed by 0.2 mA, calculate the change in collector current. [3+8+5]

Aj

nt

uW

or

ld .

?????

8

R05 Set No. 2

If the base current is changed by 0.2 mA, calculate the change in collector current. [3+8+5]. 7. (a) Classify timers according to the function and the techniques ...
Download PDF
67KB Sizes 0 Downloads 46 Views
Report

Recommend Documents

R05 Set No. 2
[16] · 4. What are channel,circuit and half circuit in the context of satellite telemetry sys- .... 3. Describe the conditions for total internal reflection within a fibre. [16].
R05 Set No. 2
(b) Describe a DC Servo Motor with a neat sketch. [8+8] · 4. (a) What is a timing belt? Discuss the use of Timing belts in power transmission? (b) Discuss various ...
R05 Set No. 2
(b) In a slider crank mechanism the crank is making an angle of 600 with IDC. The crank and connecting rod lengths are 100mm and 300mm respectively.
R05 Set No. 2
Code No: R05412304. R05. Set No. 2. IV B.Tech I Semester Examinations,November 2010 · DOWNSTREAM PROCESSING · Bio-Technology · Time: 3 hours.
R05 Set No. 2
(b) Consider any two networks of your choice which support Circuit switching or ... (b) Which is more efficient, circuit switching or packet switching? Why?
R05 Set No. 2
(a) What is the difference between logical I/O and device I/O? (b) Explain feed back scheduling policy. [8+8] · 2. (a) How can logical address space be ...
R05 Set No. 2
kerosene, and fuel oil must be limited as also shown in this table. There are no ... equipment is a function of x, the size (horsepower ) of the motor, namely.
R05 Set No. 2
(b) A 30m chain was found to be 15cm too long after chaining 1524m. The same ... 7. (a) Explain compensating and cumulative errors in chain Surveying.
R05 Set No. 2
R05. Set No. 2. II B.Tech I Semester Examinations,MAY 2011 · MATHEMATICS-III · Common to ICE, E.COMP.E, ETM, E.CONT.E, EIE, ECE, EEE · Time: 3 hours.
R05 Set No. 2
(b) What is meant by displacement function? (c) Give the importance of Pascal Triangle. [4+6+6] · 3. Determine the displacements at nodes and the stresses in ...
R05 Set No. 2
The horizontal distance between u/s face and center line of drain holes is 8 m. ... (c) Cut-off trench ... Bed width of parent channel U/S / D/S = 45 m/40 m. [16].
R05 Set No. 2
Also draw the relevant circuit diagram. (b) Draw the resistive model of a CMOS inverter and explain its behavior for. LOW and HIGH outputs. [8+8]. 8. (a) It is necessary to identify the position of mechanical disk, when rotates with a step of 450. Gi
R05 Set No. 2
R05. Set No. 2. II B.Tech I Semester Regular Examinations,November 2010 · MATHEMATICS-III · Common to ICE, E.COMP.E, ETM, E.CONT.E, EIE, ECE, EEE.
R05 Set No. 2
4. Give the syntax for 'awk'. Discuss about the selection criteria in awk. How to · embed action in to this command. Explain with examples. [16] · 5. Write about different Unix locking techniques. [16] · 6. (a) What are the differences between shell
R05 Set No. 2
of Rs. 1,500 would be deposited in this fund under an ordinary annuity plan. All · money in the fund can be .... (b) Discounted cash flow · (c) Net present worth ... would last for 10 years. A worn-out storage tank of capacity equivalent to the new.
R05 Set No. 2
R05. Set No. 2. III B.Tech I Semester Examinations,May 2011 · WEB TECHNOLOGIES · Information Technology ... that describes your college. The paragraph ...
R05 Set No. 2
(b) What is the necessity of heat treatment after carburizing? Explain. On what ... (b) What is the difference in heat treatment between 18% Ni and the 25% Nickel.
R05 Set No. 2
is subjected to a load of 200 kN, find the stresses developed in the two materials. ... Compare the values of max. and minimum hoop stresses for a cast steel ...
R05 Set No. 2
The cores of two identical transformers A and B carry alternating fluxes whose instantaneous values are (0.01 sin 314t)W and 0.012 (1.1 sin 628t+0.1 sin 1884t).
R05 Set No. 2
(a) Explain live node, E-node and dead node with an example. (b) Explain the method of reduction to solve TSP problem using Branch and · Bound. [8+8] · 3. (a) Prove that Prim's algorithm finds a minimum spanning tree. (b) Explain the single source sh
R05 Set No. 2
at 0.8 p.f. lagging and 15A at 0.6 p.f. lagging respectively, both expressed ... (b) A single-phase motor takes a current of 10 amps at a p.f. of 0.707 lagging.
R05 Set No. 2
If the tensile stress is not to exceed 17MPa, find the safe. u.d.l. which the beam can carry. Also find maximum compressive stress. Draw the sketch showing the ...
R05 Set No. 2
beans with the above mentioned beans. [16]. 8. (a) Explain the basic structure of an XML document and highlight the advantages of XML over HTML. 3.
R05 Set No. 2
Code No: R05320201. R05. Set No. 2. III B.Tech II Semester Examinations,December 2010 ... Common to ICE, ETM, E.CONT. ... H(s) = 1/(s + 0.5) (s2 +0.5s+2).