The document contains questions and answers from multiple electrical engineering exams covering topics such as power electronics, electrical machines, basic electrical engineering, and electrical and electronics engineering lab. The questions test knowledge of different types of converters, motors, circuit testing procedures, and electrical measurements. The answer key is provided at the end of each section.

1. Advance PowerElectronics(EE3614) 5 marks each
1. Stepdowndc-dc converterisknown
a) Buck converterb) boostconverterc) Xmerd) None of above
2. Buck converterare usedin
a) Inverterb) Solarcharger c) TV d) both a and b
3. Flyback converterisusedin
a) Mobile phone chargerb) SMPS c) CPU d) All the above
4. In sine wave inverter
a) 3rd
orderharmonicis presentb) 6th
orderharmonicis presentc) botha and b d0 None of
above
5. In boostconverterinductorisconnectedin
a) Seriesb) parallel c) bothd) None of above
6. What doesinductordoin boostconverter
a) Store current b) store voltage c) store electronsd) All the above
Answerkey
1 a 2 d 3 d 4 a 5 a 6 a
Electrical Machine II(EE2408) 3 marks each
1. 3 phase inductionmotoris
a) Self startingb) Requiredstarterc) bothd) None of above
2. Can 3 phase inductionmotorrunby2 phase
a) Can run b) can’t run c) possible d) None of above
3. 3 phase synchronousmotorcancorrect
a) Powerfactorb) voltage c) currentd) frequency
4. Synchronousmeans
a) Ratedspeedb) alternate speed c) const.speedd) All the above
5. V/f speedcontrol can change speedbychanging
a) V onlyb) f onlyc) both d) None of above
6. V/f speedcontrol canachieve
a) Const. speedb) const.torque c) smoothspeedd) All the above
7. 1 phase inductionmotorrequires______to operate
a) 1 phase supplyb) 2-phase supplyc) 3 phase supplyd) All the above
8. 1 phase inductionmotorhave
a) Higherefficiencyb) goodvoltage regulationc) lesstorque d) None of above
9. Whichone is betterforstartingtorque
a) Squirrel cage IMb) SlipringIM
10. Squirrel cage inductionmotorcanbe change bychanging
a) Fieldcurrentb) Fieldvoltage c) Botha andb d) None of above

2. Answerkey
1 a 2 b 3 a 4 c 5 c 6 c 7 b 8 c 9 b 10 c
Basic Electrical Engineering(EE-102)
1. Voltmeterisconnectedin
a) Seriesb) parallel c) Bothd) None of above
2. Multimeterisadevice use tocheck
a) Currentb) voltage c) continuity d) All the above
3. All the powersourcesstarts from
a) Zerob) max to minc) 220V d) None of the above
4. Opencircuittestof Xmerisperformedtofind
a) Iron lossb) currentlossc) voltage lossd) All the above
5. In opencircuittestof transformer
a) H.V side isusedas primaryb) H.V side isusedas secondaryc) L.V side isusedas primaryd)
L.V side isusedasSecondary
6. In electrical circuitsignconvention
a) +ve isassignedforpotential risesb) –ve isassignedforpotential dropc) –ve isassignedfor
reverse directiond) None of above
7. Algebraicsumof currententeringandleavingajunctionis
a) Zerob) one c) nearto zero d) more than 1
8. DC motor isrun by
a) AC converterb) DC powerc) AC currentonlyd) All the above
9. Unit of speedis
a) RPS b) PPQc) RPM d) All the above
10. Unit of torque is
a) Nm b) NMc) T d) P
AnswerKey
1 c 2 d 3 a 4 a 5 c 6 a 7 a 8 b 9 c 10 a
Basic Electrical andElectronicsEngg.Lab (EE1201)
1. Why capacitor isusedinrectifiercircuit
a) to store voltage
b) to charge current
c) to filter

3. d) all the above
2. No. of diodesusedinhalf wave rectifiercircuit
a) 1 b) 2 c) 3 d) 4
3. Why transformerisusedinrectifiercircuit
a) to regulate voltage
b) to stepdownvoltage
c) to regulate current
d) all the above
4. If ammeterisconnectedinparallel,whatwill happen
a) Shortcircuit
b) Nothingwill happen
c) Currentwill rise
d) None of above
5. Name the polarityusedinSingle phaseACsupply
a) Phase & Neutral
b) Live & Ground
c) botha & b
d) None of above
6. Frequencyof DC supplyis
a) 1 b) 50 c) 0 d) 10
AnswerKey
1. C 2. A 3. b 4. A 5. C 6. C