9/15/2017 Role-specific Electrical Engineering Interview Questions and Answers
Interview Questions Answers.ORG
Interviews Quizzes
Custom Search Search
Role-specific Electrical Engineering Interview Questions & Answers:
Download Interview PDF
1. In a star connected three phase transformer the
* a) Three phases are connected together at the start point
* b) Three phases are separate
* c) Neutral conductor is connected to a single phase
* d) Neutral conductor is electrically separated
Answer - a
2. A single-phase double-wound transformer consists of
* a) A single core mounted winding
* b) A winding that carries the difference between IP and IS
* c) A single solid core
* d) Two electrically separated coils
Answer - d
3. One method of insulating windings is to use
* a) Shelac
* b) High reluctance silicon steel
* c) Low frequency dust cores
* d) PVC
Answer - a
4. The usual method of insulating core laminations is
* a) Low reluctance silicon steel
* b) Surface oxidization
* c) High frequency air cores
* d) Cellulose paper
http://interviewquestionsanswers.org/_Electrical-Engineering 1/28
,9/15/2017 Role-specific Electrical Engineering Interview Questions and Answers
Answer - b
5. If a motor is required to start against a large starting current, it is usual to use
* a) Direct on line starter
* b) Face plate starter
* c) Step down centre tapped starter
* d) Rotor resistance starter
Answer - d
6. In a shunt-wound motor the field coil is connected in
* a) Series with the armature
* b) Series with the motor
* c) parallel with the armature
* d) parallel with the motor
Answer - c
7. When the field windings of an electrical machine are not connected to its own armature, it is
known as
* a) Self- excited
* b) Polyphase
* c) Separately-excited
* d) Synchronous
Answer - c
8. With a star-delta starter, the windings are brought out to a terminal box. The voltage applied to the
windings at starting is
* a) VL ÷ v3
* b) VL x v3
* c) VPhase ÷ v3
* d) VPhase x v3
Answer - a
9. Particular starting arrangements are used when a motor has a rating greater than
* a) 370 microwatts
* b) 0.37 watts
* c) 37 watts
* d) 370 watts
http://interviewquestionsanswers.org/_Electrical-Engineering 2/28
, 9/15/2017 Role-specific Electrical Engineering Interview Questions and Answers
Answer - d
10. An isolator built into a panel is used for
* a) Normal load switching
* b) Fault load switching
* c) Short circuit protection
* d) No load switching
Answer - d
Download Interview PDF
11. A device with a BS EN number has been
* a) Agreed for use only within the UK
* b) Agreed for operational use within the EU
* c) Standardized for all operational uses only in the UK
* d) Standardized for use in the EU
Answer - d
12. Q8 BS 7671 provides appropriate advice on
* a) Heights of panels
* b) Design of panels
* c) Environmental conditions
* d) Instrumentation
Answer - c
13. What degree of protection is specified for protection against a BS finger?
* a) IP4XB
* b) IP5XB
* c) IP6XB
* d) IPXXB
Answer - d
14. Which of the following is statutory?
* a) BS 7671
* b) On-Site Guide
* c) Electricity at Work Regulations
* d) GS 38
http://interviewquestionsanswers.org/_Electrical-Engineering 3/28
Interview Questions Answers.ORG
Interviews Quizzes
Custom Search Search
Role-specific Electrical Engineering Interview Questions & Answers:
Download Interview PDF
1. In a star connected three phase transformer the
* a) Three phases are connected together at the start point
* b) Three phases are separate
* c) Neutral conductor is connected to a single phase
* d) Neutral conductor is electrically separated
Answer - a
2. A single-phase double-wound transformer consists of
* a) A single core mounted winding
* b) A winding that carries the difference between IP and IS
* c) A single solid core
* d) Two electrically separated coils
Answer - d
3. One method of insulating windings is to use
* a) Shelac
* b) High reluctance silicon steel
* c) Low frequency dust cores
* d) PVC
Answer - a
4. The usual method of insulating core laminations is
* a) Low reluctance silicon steel
* b) Surface oxidization
* c) High frequency air cores
* d) Cellulose paper
http://interviewquestionsanswers.org/_Electrical-Engineering 1/28
,9/15/2017 Role-specific Electrical Engineering Interview Questions and Answers
Answer - b
5. If a motor is required to start against a large starting current, it is usual to use
* a) Direct on line starter
* b) Face plate starter
* c) Step down centre tapped starter
* d) Rotor resistance starter
Answer - d
6. In a shunt-wound motor the field coil is connected in
* a) Series with the armature
* b) Series with the motor
* c) parallel with the armature
* d) parallel with the motor
Answer - c
7. When the field windings of an electrical machine are not connected to its own armature, it is
known as
* a) Self- excited
* b) Polyphase
* c) Separately-excited
* d) Synchronous
Answer - c
8. With a star-delta starter, the windings are brought out to a terminal box. The voltage applied to the
windings at starting is
* a) VL ÷ v3
* b) VL x v3
* c) VPhase ÷ v3
* d) VPhase x v3
Answer - a
9. Particular starting arrangements are used when a motor has a rating greater than
* a) 370 microwatts
* b) 0.37 watts
* c) 37 watts
* d) 370 watts
http://interviewquestionsanswers.org/_Electrical-Engineering 2/28
, 9/15/2017 Role-specific Electrical Engineering Interview Questions and Answers
Answer - d
10. An isolator built into a panel is used for
* a) Normal load switching
* b) Fault load switching
* c) Short circuit protection
* d) No load switching
Answer - d
Download Interview PDF
11. A device with a BS EN number has been
* a) Agreed for use only within the UK
* b) Agreed for operational use within the EU
* c) Standardized for all operational uses only in the UK
* d) Standardized for use in the EU
Answer - d
12. Q8 BS 7671 provides appropriate advice on
* a) Heights of panels
* b) Design of panels
* c) Environmental conditions
* d) Instrumentation
Answer - c
13. What degree of protection is specified for protection against a BS finger?
* a) IP4XB
* b) IP5XB
* c) IP6XB
* d) IPXXB
Answer - d
14. Which of the following is statutory?
* a) BS 7671
* b) On-Site Guide
* c) Electricity at Work Regulations
* d) GS 38
http://interviewquestionsanswers.org/_Electrical-Engineering 3/28
