e
* 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 moun...
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
, 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
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller StudyCenter1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.49. You're not tied to anything after your purchase.
