Name of the Centre : MLR Institute Of Technology
Name Of The Exam : B.Tech I Year II Sem Advanced Supplementary Examinations
Name Of The Subject : Basic Electrical Engineering :
Year : July-2016
Document type : Sample questions Papers
Website : https://mlrinstitutions.ac.in/
Download Sample Question Paper :
Advanced Graphics : https://www.pdfquestion.in/uploads/13181-AdvancedGraphics.pdf
Electrical Engg : https://www.pdfquestion.in/uploads/13181-BasicECE.pdf
Data Structures : https://www.pdfquestion.in/uploads/13181-DataStructures.pdf
Electrical & Electronics Engg : https://www.pdfquestion.in/uploads/13181-Electrical&Electronics.pdf
Engineering Drawing : https://www.pdfquestion.in/uploads/13181-EngineeringDrawing.pdf
Engineering Physics : https://www.pdfquestion.in/uploads/13181-EngineeringPhysics.pdf
English : https://www.pdfquestion.in/uploads/13181-English.pdf
B.Tech I Year II Sem Advanced Supplementary Examinations :
Basic Electrical Engineering :
Time: 3 hours
Max. Marks: 75
Note :
1. This question paper contains two parts A and B
2. Part A is compulsory which carries 25 marks .Answer all Questions in part A.
Related : MLR Institute Of Technology B.Tech I Year I Sem Advanced Supplementary Exam Question Paper : www.pdfquestion.in/13170.html
3. Part B consists of 5 units. Answer any one full question from each unit. Each question carriers 10 Marks and may have a, b,c sub questions
Part –A : (25 marks)
1. a) Find the current through 72O resister if the voltage drop across it is 12V? (2M)
b) What is the statement of Superposition theorem? (2M)
c) Write the advantages of moving iron instrument? (2M)
d) Write the principle of DC motor? (2M)
e) What is the speed of a 4 pole 50Hz synchronous machine? (2M)
2. a) three capacitors 2F, 5F and 4.5F are connected in series. What is its Ceq? (3M)
b) Write the expression for star to delta and delta to star transformation technique? (3M)
c) What are the different losses occur in a transformer? (3M)
d) What is the purpose of commutator in DC machine? (3M)
e) Define slip and rotor frequency? (3M)
Part –B : (50Marks)
3. a) State and explain kirchhoff’s laws with an example? (5M)
b) Calculate the effective resistance of the following combination of resistance and supply current when a potential difference of 60V is applied between point A and B (5M)
4. a) Derive an expression for equivalent resistance of a resistor in a circuit when they are Connected in i) series ii) parallel? (5M)
b) Find Ceq of a given circuit? (5M)
5. a) Determine the current in 2k ohm resistor using nodal analysis in the given circuit? (5M)
b) Find the current through 3ohm resistor using superposition theorem in the given circuit? (5M)
(OR)
6. a) Find current through load resistance of 6 ohm using thevenin theorem? (5M)
b) Determine Rab ? (5M)
7. a) With neat sketch explain the construction and working of PMMC instrument? (5M)
b) What are the essential torques required for proper operation of indicating instruments? Explain. (5M)
(OR)
8. a) Derive the emf equation of transformer? (5M)
b) In a 60kVA transformer the iron loss is 600W and full load copper loss is 900W. Find the efficiency at half load at 0.7 p.f lagging? (5M)
9. a) Explain in details the various losses in a DC machine? (5M)
b) A 4 pole motor is fed at 400V takes an armature current of 40A, Armature resistance is 0.3 ohm of wave connected with 888 conductor and useful flux of 0.023wb.Calculate the speed of the motor? (5M)
(OR)
10. a) Derive the EMF equation of the DC generator? (5M)
b) A Shunt generator supplies 97A at a terminal voltage of 200V.The armature and shunt resistances are 0.2 ohm and 60 ohm. The iron and friction losses are 2500W. Find (i) EMF generated (ii)Copper losses (5M)
11. a) Derive the torque equation of a three phase Induction motor? (5M)
b) A 12 pole 3- phase alternator driven at a speed of 500r.p.m and supplies a power to an 8 pole, 3- Phase induction motor. If the slip of the motor is 3%. Find the actual speed of the motor? (5M)
(OR)
12. a) Explain the principle of operation of three phase alternator? (5M)
b) Find the number of conductors in series per phase required for the armature of a three phase 50 Hz, 10 pole alternator. The winding is star connected to give a line voltage of 11000V. The Flux per pole is 0.2wb. Assume Kp=1=Kd (5M)
English : (Common to CSE, IT, AERO)
PART-A : 25 Marks
1. a. i. Choose the meaning of the underlined idioms from the options given. 2×1/2=1M
A) Many farmers in order to get money in debt happened to dance to the tune of zamindars.
a) for better employment opportunities
b) to do what one wants
c) to improve their living conditions
d) for good earning money
B) The inspection team were displeased with the academic arrangements made at the college because the college is beating round the bush.
a) not understanding
b) to have no opinion
c) to think bad
d) not coming to the point
a. ii. Choose the right answer from the given options which conveys the suitable meaning for the given sentences. 2×1/2=1M
A) They often___________ things.
a)They often forgets things.
b)They have often forget things.
c)They often forget things.
d)They will often forgot things.
B) So far I____________ preparing for the exams.
a. So far I haven’t started preparing for the exams.
b. So far I haven’t start preparing for the exam.
c. So far I haven’t preparing for the exam.
d. So far I haven’t start prepare for the exam.
b. i. Correct the mistakes, if any, and rewrite the following sentences. 4×1/2=2M
a. None of my friends are intelligent.
b. I love reading as well as listen to music.
c. I suggest you to see a doctor.
b. ii. Choose the correct answer from the given options and change the voice of the given sentences accordingly. 2×1/2=1M
A) Mr. Rao teaches us grammar.
a. We taught grammar by Mr. Rao.
b. We are teach grammar by Mr. Rao.
c. We had taught grammar by Mr. Rao.
d. We are taught grammar by Mr. Rao.
B) The University will declare the results next week.
a. The results will declare by the university next week.
b. The results will be declared by the university next week.
c. The results declared by the university next week.
d. The results will be declare by the university next week.
c. i. Select the right answer from the given options and change the speech of the given sentences accordingly. 2×1/2=1M
A) “Did you study hard for the exam?” she said.
a. She asked I had studied hard for the exam.
b. She asked if I studied hard for the exam.
c. She asked if I had study hard for the exam.
d. She asked if I had studied hard for the exam.
B) He says that he will answer the phone.
a. He says, “I answer the phone.”
b. He says to me, “I will answer the phone.”
c. He says, “I will answer the phone”.
d. He says, “I would answer the phone.”
c. ii. Write any three words by using the following affixes. 4×1/4=1M
a. -ment
b. -logy
c. dis-
d. un-
d. i. Choose the one-word substitutes for the given expressions. 2×1/2=1M
A) Policemen riding on motorcycles as guards to a VIP.
a. outriders
b. convoy
c. commandos
d. escort
B) Words inscribed on a tomb.
a. epitome
b. epistle
c. epilogue
d. epitaph
d. ii. Choose the right “synonyms” for the words from the given options. 2×1/2=1M
A) Expel
a. detain
b. remove
c. preserve
d. reserve
B) Exhaustive
a. complete
b. tiring
c. useful
d. adequate
e. i. Choose the “antonyms” for the following words from the given options. 2×1/2=1M
A) Confess
a. decline
b. perfect
c. unite
d. deny
B) Vague
a. unclear
b. vivid
c. lucid
d. translucent