SBTET Diploma Updates

C14-EC- 405
Model question paper-I
BOARD DIPLOMA EXAMINATION, (C-14)
DECE-IV Semester EXAMINATION
Microprocessor & Microcontroller Programming

Time 3 Hours]                             [TOTAL MARKS:80

PART-A

Instructions: (1) Answer allquestions.
(2) Each question carries three marks.
(3) Answers should be brief and straight to the point and shall
not exceed five simple sentences.

1. Define operation code, operand with examples
   2 Give the function of status flags
   3.List the features of 8051micro controller
   4.Compare Microprocessors and Microcontrollers
   5.Give the instruction format of 8051
   6.Define the terms machine language, assembly language
   7.Define stack and stack pointer
   8.Explain the term debugging a program
   9.List RS232 pins of DB 25 connectors
   10.Explain MAX 232 interfacing

PART-B

C14-EC- 405
Model question paper-I
BOARD DIPLOMA EXAMINATION, (C-14)
DECE-IV Semester EXAMINATION
Microprocessor & Microcontroller Programming

Time 3 Hours]                             [TOTAL MARKS:80

PART-A

1. List the features of micro processors


2. List the latest processors used in Desktop/laptop computers.


3. Explain I/O ports of 8051
   4.Give any six Special Function Register’s of 8051
   5.State the need for an instruction set
   6.Define machine cycle and T-state.
   7.List and draw the various symbols used in drawing flow charts


4. Write a program to add any two 8-bit numbers.


5. List RS232 pins of DB9 connectors


6. Explain MAX 233 interfacing
   [Contd….

PART-B

11.Explain execution of STA instruction with the help of timing diagrams
12.(a) Define fetch cycle, execution cycle and instruction cycle of 8085
(b)Write a program to generate the time delay using a register of 8051 baed system
.Assume that the crystal frequency of the system is 25MHZ.
13.Give the pin diagram of 8051 micro controller and specify the purpose of each pin
14.Explain the memory organization of 8051
15.Explain any five data transfer instructions of 8051 with examples
16.Explain unconditional and conditional jump instructions
17.(a)Explain about different debugging techniques.
(b)Write a program to multiply two 8 bit numbers
18.Write a program to generate a square wave of 50%duty cycle with timer1 in Mode1 on the port pin 2.6 using subroutine technique. Determine the time delay generated by the timer for the value of the count 1009H.Assume that crystal frequency of the system is 12MHZ

C14-EC- 403

Model question paper-I

BOARD DIPLOMA EXAMINATION, (C-14)

DECE-IV Semester EXAMINATION

Network Analysis

Time 3 Hours]                                                                     [TOTAL MARKS:80 

PART-A

  PART-B

 

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                                                                                                                                                C14-EC- 403

Model question paper-II

BOARD DIPLOMA EXAMINATION, (C-14)

DECE-IV Semester EXAMINATION

Network Analysis

Time 3 Hours]                                                                     [TOTAL MARKS:80 

  PART-B

 

C14-EC- 402

Model question paper-I

BOARD DIPLAMA EXAMINATION, (C-14)

DECE-IV Semester EXAMINATION

Linear Integrated Circuits

Time 3 Hours]                                                [TOTAL MARKS:80

PART-A

1. List different IC packages. Draw the shape of above package types.


2. List 6 merits of SMT Technology.


3. State the function of an operational amplifier.


4. Give the Pin  configuration of IC 741.


5. List 6 applications of multivibrators.


6. List the types of IC regulators and give the advantage of IC regulators.


7. List the different types of clippers.


8. List the applications of PLL.


9. Write any three Advantages of instrumentation amplifier.


10. Define the terms resolution, Accuracy, Monotonicity of D/A converter.

11. Describe the manufacturing process of monolithic ICs.


12. Explain the Inverting amplifier configuration of Op Amp. Draw the input and output waveforms and derive the equation for voltage gain.


13. Draw and explain OP-Amp Wein-bridge Oscillator circuit.


14. Draw and explain the working of OP-Amp Bistable multi vibrator with waveforms.


15. Explain the unbiased and biased clippers with waveforms.


16. Draw and explain the block diagram of PLL – LM565.


17. Explain the Voltage to current converter circuit.


18. Explain A/D conversion using counter method.

******************

Model question paper-II

BOARD DIPLAMA EXAMINATION, (C-14)

DECE-IV Semester EXAMINATION

Linear Integrated Circuits

Time 3 Hours]                                                                     [TOTAL MARKS:80

1. Explain various levels of integration.


2. Mention the power rating of different IC packages.


3. State the important characteristics of ideal operational amplifier.


4. Give the pin configuration of single supply Op Amp LM324.


5. Distinguish between voltage and current time-base generation and list their applications.


6. Classify Multi vibrators.


7. Mention the applications of clippers and clampers.


8. Define capture range of PLL.


9. List 3 applications of Current to Voltage converter.


10. State the need for D/A conversion.

PART-B

11. Describe the fabrication of diode and transistor on monolithic IC.


12. Explain the Non Inverting amplifier configuration of Op Amp and derive the formula for Voltage gain.


13. Draw and explain the working of OP-Amp Bistable multi vibrator with waveforms.


14. Draw and explain the working of OP-Amp Schmitt trigger circuit.


15. Explain the principle of clamper circuit with waveforms.


16. Explain the working of astable multi using 555 IC.


17. Explain the Current to Voltage converter circuit .


18. Explain D/A conversion using R-2R ladder network.

******************

Board Diploma Examinations

IV Semester Examinations

Model Question Paper-I

Engineering Mathematics-III

(C-14 Scheme)

Part-A

• Answer all questions.


• Each question carries three marks.


• Answer should be brief and straight to the point                            10x3=30 marks

1. Solve the equation  


2. Solve (D ⁴- 8D²+ 16) y = 0.


3. Find the Particular Integral for (D²+ 4) y = Sin2x + e^-2x.


4. State the change of scale property and first shifting theorem of Laplace Transforms.


5. Find the Laplace Transform of 4e^2t + 6t³-3 Cos 5t + Sin t.

Part-B                                     10x5 = 50 marks

•   Answer any five questions.


•  Each question carries ten marks.


•  Answer should be comprehensive and the criteria for valuation are the content but not the length of the answer.

15. Find Fourier series for the function 

Board Diploma Examinations

IV Semester Examinations

Model Question Paper-II

Engineering Mathematics-III

(C-14 Scheme)

• Answer all questions.


• Each question carries three marks.


• Answer should be brief and straight to the point                            10x3=30 marks

1. Solve the equation 


2. Solve (D ⁴- 5D² + 4) y = 0.


3. Find the Particular Integral for (D² + D -6) y = e^3x+ e^-3x.


4. Find the Laplace Transform of Sin3t.Cos4t.


5. Define Convolution of two functions and state the convolution theorem.


6. Find the inverse Laplace Transform of 


7. Find inverse Laplace Transform of 


8. Write the Euler’s formulae for Fourier series of a function f(x) in the Interval [C, C+2l].


9. Find the Fourier Coefficient in


10. An integer is picked from 1 to 20 numbers, both inclusive. Find the probability that it is a prime.

• Answer any five questions.


• Each question carries ten marks.


•  Answer should be comprehensive and the criteria for valuation are the content but not the length of the answer.

1. Find Fourier series for the function 

f(x) = 

BOARD DIPLOMA EXAMINATIONS (C-14)

DEE – THIRD SEMESTER EXAMINATIONS

GENERAL MECHANICAL ENGINEERING

Time: 3 Hours               Total marks: 80

     PART-A                                         10X3=30

1. List out the types of loads and describe any two loads with neat sketches?


2. Define the terms stress & strain & its units?


3. What is shaft? State its functions.


4. Define polar moment of Inertia?


5. State any 8 components of an IC engine and mention their functions?


6. Define BDC, TDC & stroke length?


7. State the principle of water tube boiler?


8. Write the applications of steam turbine?


9. Name different properties of lubricants?


10. What are the advantages of centrifugal pump over the other pumps?

PART-B                                              5X10=50

11. Explain stress-Strain diagram for a ductile material indicating the salient points


12. A bar of varying section is loaded as shown in fig determine the total elongation. If E= 2x10⁵ N/mm²

BOARD DIPLOMA EXAMINATIONS (C-14)

DME – THIRD SEMISTER EXAMINATIONS

GENERAL MECHANICAL ENGINEERING

Time: 3Hours                                                                      Total marks: 80 

     PART-A                                         10 X 3=30

1. Define lateral strain & poisson’s ratio?


2. Define the hook’s law & proportional limit?


3. Define the torsion? Which stress is induced in shaft, when it is subjected to twisting moment?


4. A solid shaft is to transmit350 KW of power at 110 rpm if the maximum shear stress is induced must not exceed 80N/mm²; find the diameter of the shaft?


5. What is an internal combustion engine?


6. List out any six parts of an IC engine?


7. Name different types of boiler mountings?


8. Write the application of steam turbines?


9. Write about priming of centrifugal pumps?


10. Name different properties of lubricants?

11. A bar of 30 mm dia is subjected to a pull of 60KN. The measured extension over a gauge length of 200 mm is 0.09 mm and change in dia is 0.0039 mm. Find the Poisson's ratio and the values of the three moduli.


12. A bar of varying section is loaded as shown in fig determine the total elongation. If E= 2x10⁵ N/mm²

13. A hollow shaft is required to transmit 400kw at 240 rpm. The maximum torque is 20% greater than the mean. The permissible shear stress is 60 N/mm². The twist in a length of 4m is not to exceed 15⁰. The ratio between inner and outer diameter is 2/3, calculate inner and outer diameters of the shaft. Take G = 80KN/mm².


14. Explain working principle of 2 stroke petrol engine with neat sketch?


15. a) Compare two stroke engines with four stroke engines?


16. b) Compare Compression ignition engine with Spark ignition engine?


17. Explain the working of Benson boiler with a neat sketch?


18. With a neat sketch explain the working of impulse turbine?


19. Explain the working and constructional details of a centrifugal pump with a neat sketch.

Board Diploma Examinations

III Semester DEEE

Model paper-I

Electronics-I (EE-305)

Time : 3 hrs                                        Max Marks : 80 Marks

                                      PART- A                                10 x 3 = 30

1. Define (i) Resistance (ii) Capacitance?


2. List the applications of capacitors?


3. Draw the symbols of NPN and PNP transistors?


4. Draw the bridge rectifier circuit?


5. State the need of filter?


6. List the applications of the UJT?


7. Draw the symbols of FET and SCR?


8. List the causes for instability of bias in amplifier?


9. Define the D.C operating point in amplifiers?


10. List different types of coupling methods?

11. Explain about colour code used in calculating a resistance value?


12. Explain the operation of zener diode and draw its characteristics?


13. Explain the working principle of full wave rectifier with waveforms?


14. Draw and explain the working of a uni junction transistor?


15. Explain the construction and working of a LCD?


16. Draw and explain about the potential divider bias in amplifiers?


17. Draw and state the function of each component in transformer coupled amplifier?


18. Draw the frequency response characteristics of RC coupled amplifier and indicate the gain band width, upper cut-off and lower cut-off frequencies

Board Diploma Examinations

III Semester DEEE

Model paper-II

Electronics-I (EE-305)

Time : 3 hrs.                                    Max Marks : 80 Marks

                                            PART- A                                10 x 3 = 30

1. Define (i) Self-inductance (ii) Mutual inductance?


2. Mention the specifications of resistors?


3. State the different transistor configurations?


4. Draw the half wave rectifier circuit?


5. List the different types of filter?


6. List the applications of the SCR?


7. Draw the symbols of LED and photo transistor?


8. State the necessity of proper biasing for amplifier?


9. List different biasing methods used in amplifiers?


10. State the necessity of cascading of amplifiers?

PART- B                              5 x 10 = 50

11. Explain the losses in i) Inductors and ii) Transformers?


12. Explain the working of PN Junction diode with no bias, forward bias and reverse bias?


13. Explain the working principle of bridge wave rectifier with waveforms?


14. Draw and explain the working of a field effect transistor (FET)?


15. Explain the construction and working of a SCR?


16. Draw and explain about the collector to base bias in amplifiers?


17. Draw and state the function of each component in RC coupled amplifier?


18. Classify amplifiers on the basis of i) frequency ii) function iii) type of load iv) period of Conduction and v) Number of stages?

1. State the types of secondary instruments


2. Distinguish between Absolute and Secondary instruments


3. List the applications of M.C Instruments


4. List the errors commonly occurring in M.I. Instruments.


5. List the methods of measurement of


6. i) Low resistance ii)Medium resistance and      iii)High resistance


7. Distinguish between shunt and series Ohm-meters


8. State the need of Transducers in Measurement systems


9. List the applications of sensors.


10. List analog electronic Instruments.


11. List the types of digital Voltmeters

PART –B

1. (a)State the uses of Tong tester (clamp meter).(5) (b) Classify the electromechanical instruments according to Principle of Working (5)


2. Describe the construction and working of Attraction type Moving Iron (M.I) Instrument


3. Describe the construction and working of a dynamometer type instrument


4. Describe construction and connections of a 3-phase energy meter.


5. List the errors commonly occurring in M.I. Instruments and suggest their remedies


6. Explain the construction and working of Megger


7. Explain the measurement of temperature using Thermister in a Bridge circuit.


8. Explain the Working of Single Phase Digital Energy meter with block diagram.

ELECTRICAL & ELECTRONIC MEASURING INSTRUMENTS

              BOARD DIPLOMA EXAMINATIONS, (C-14)

                DEEE-THIRD SEMISTER EXAMINATIONS

    MODEL PAPER-I

                         ELECTRICAL & ELECTRONIC MEASURING INSTRUMENTS

                                                           SUB CODE:EE-304

1. List any six important electrical quantities to be measured by giving their units.


2. Define i) accuracy ii) precision     iii) error


3. List the three types of errors commonly occurring in moving coil (M.C.)instruments


4. List the applications of CT and PT.


5. List the applications of Potentiometer.


6. Classify the resistance into Low , Medium and High Values


7. State the applications of Transducers.


8. Write about Semiconductor sensors.


9. List analog electronic Instruments.


10. State the uses of Tong tester (clamp meter).

PART –B

1. (a) Explain the methods of obtaining i)deflecting torque ii) controlling torque    and iii) damping torque in indicating instruments.(5)

BOARD DIPLOMA EXAMINATIONS, (C-14)

DEEE-THIRD SEMISTER EXAMINATIONS
MODEL PAPER
EE-302  D.C. MACHINES
Time: 3Hours Total marks: 80

PART-A

1. State the Fleming’s right hand rule?


2. Define (a) Pole pitch (b) Back pitch (c) Front pitch?


3. Draw the power flow diagram of d.c generator?


4. State the causes of sparking at brush of d.c generator?


5. List the advantages of parallel operation of d.c generator?


6. A 4 pole 500V, shunt motor has 720 wave wound armature conductors. The full load armature current is 60A, and the flux/pole is 0.03Wb.The armature resistance is 0.2ohm and the contact drop is 1V/Brush, Calculate the full load speed of the motor?

7. State the different losses in D.C motors?


8. State the factors that affect the speed of a D.C motor?


9. Draw the connection diagram for speed control of d.c.series motor


10. What are the disadvantages of Swinburne’s Test.

11. Explain the construction of a dc generator with neat sketch?


12. . Classify the D.C generators based on excitation along with voltage and current equations, showing diagrammatically?

13. A100kw, 400V, 6pole dc shunt generator has a lap wound armature with 36 slots and 28 Conductors per slot. The shunt field resistance is 100 ohms. The brush is given a lead of 12°. Calculate the Demagnetising and cross magnetising AT/Pole?

14. Explain O.C.C, Internal and external characteristics of D.C Shunt generator?


15. (i) Classify DC motors in to different types with figures of each. Also write voltage and Current  equation?

16. (i) Derive the condition for maximum efficiency of D.C motor?

17. Draw the schematic diagram of a 3-point starter and explain the working with protective devices?

18. A 250V 15KW Shunt motor has a maximum efficiency of 88% and a speed of 750 r.p.m when delivering 75% of its rated output. The resistance of its shunt field is 100ohms.Calculate the efficiency when the motor draws a current of 78Amp from mains?

BOARD DIPLOMA EXAMINATIONS, (C-14)

DEEE-THIRD SEMISTER EXAMINATIONS
MODEL PAPER
EE-302  D.C. MACHINES
Time: 3Hours Total marks: 80

PART-A

1. Write about dynamically induced EMF?



2. Compare Lap and wave winding in different aspects?




3. Draw the separately excited D.C generator and name the parts?




4. List the effect of armature reaction in D.C machines?




5. Draw the external characteristic curve of a D.C shunt generator?




6. State the Fleming’s left hand rule?




7. Why series motor is having high starting torque?




8. State the necessity of speed control of d.c. motor




9. State the necessity of starter in d.c motor?




10. What is meant by Regenerative Test.

  PART-B                                                5 X 10=50
Instructions: 1) Answer any five questions.
                      2) Each answer carries ten marks.

Each question carries ten marks.

1. Explain the working of simple loop D.C Generator?
   
   


2. 
   
   A shunt generator delivers 195A, at terminal p.d of 250V. The armature resistance and
   shunt field resistance are 0.02ohm and 50ohm respectively. The iron and friction losses
   equal 950 W .
   
   

1. Derive the formula for De-magnetising AT/Pole & Cross magnetising A T/Pole for a d.c
   generator?
   
   


2. 
   
   A 4pole lap wound dc generator with 450armature conductors supplies a current of
   150amps. The brushes have been displaced through 3 angular degrees from the
   geometrical neutral axis. Calculate (i) Demagnetising AT/pole (ii) Cross magnetising
   AT/pole (iii) The additional field current for neutralising the demagnetisation is the field
   winding has 1000 turns/pole?
   
   


3. 
   
   (i) explain the principle operation of D.C Motor with neat sketches?
   
   

1. Explain the different losses & power stages in d.c motor?
   
   


2. 
   
   A 200V shunt motor has armature resistance of 0.04ohm and runs at 1000 rpm, when
   the armature current is 60A.If the torque is unchanged; find the speed and armature
   current when the field strength is reduced by 20%?
   
   


3. 
   
   Explain how break test is conducted on d.c shunt motor with a neat sketch, also write
   the merits and de-merits of the test?
   
   

BOARD DIPLOMA EXAMINATIONS, (C-14)
DEEE-THIRD SEMISTER EXAMINATIONS
MODEL PAPER-II
ELECTRICAL CIRCUITS
SUB CODE:EE-303

Time: 3 Hours                        Total marks: 80

                                           PART-A                                                10 X 3=30

1. Define junction, branch and loop in circuits.


2. State the limitations of ohm’s law.


3. Define (a) cycle (b) time period (c) frequency.


4. Convert the polar form 100 /͟30° into rectangular form.


5. Define RMS value and average value.


6. A pure inductance coil taken a current of 15 amps for 200volts, 50 Hz, AC Supply find the inductance of the coil.


7. Define resonance and write the formula for the resonant frequency for RLC series circuit.


8. Why a parallel resonant circuit is called a rejecter circuit.


9. List the advantages of poly phase system over single phase system.


10. State the relation between line voltage and phase voltage, line current and phase current in delta connected network.

11. Two batteries E1 and E2 have emf’s 6 volts and 2volts respectively and external resistances of 2 ohms and 3 ohm respectively are connected in parallel across 5 ohms resistor. Calculate (a) the current in each of the battery (b) the potential difference across 5ohms resistor.


12. Derive the formula for delta to star transformation.


13. State and explain about thevenens theorem.


14. (a) Explain about phase and phase difference.

15. A resistance of 12 ohms, an inductance of 0.15 H and a capacitance of 100 micro farad are connected in series across a 100V, 50HZ, AC supply.

16. Draw and explain the graphical representation of series resonance and indicate the following in the graph.

17. (a) Define Q factor of a parallel resonant circuit.

18. Derive the formula for measurement of 3 phase power and power factor by using two watt meter method (balanced load).

BOARD DIPLOMA EXAMINATIONS, (C-14)
DEEE-THIRD SEMISTER EXAMINATIONS
MODEL PAPER-I
ELECTRICAL CIRCUITS
SUB CODE:EE-303

Time: 3 Hours                        Total marks: 80

                                           PART-A                                                10 X 3=30

Instructions: 1) Answer all questions.
              2) Each answer carries three marks.
              3) Answer should be brief and straight to the point and shall not exceed
                   five simple sentences.

1. Define (a) Active circuit (b) Passive circuit (c) linear circuit?


2. State Kirchhoff’s laws?


3. Define (a) Frequency (b) Form factor (c) Peak factor?


4. Convert the rectangular form (10+j15) into polar form?


5. Write an expression for RMS value and average value of full wave rectified sine wave?


6. Define Q-Factor series resonant circuit?


7. The current flowing through a pure capacitor is 23amps.Find the capacitance, when the voltage applied across the capacitor v=200sin314t.


8. Define Resonance and write the equation for resonant frequency for parallel circuit?


9. State the relation between the line voltage and phase voltage, line current and phase current in star connected network?


10. (a) Define the term “Poly phase ”
    (b) What is meant by phase sequence?

Linear Integrated Circuits

NETWORK ANALYSIS

Microprocessor & Micro-controller Programming

Programming in C