Switchgear and protection important question|||Electrical Engineering important Question

Important Question for Diploma

Subject Name

SWITCHGEAR & PROTECTION  

Branch & Semester

Electrical  Engineering 5th semester

Hello students,In this post I provide you most important question for your semester examination. And read full article and note this question and prepare yourself. I am sure it is more useful and 100% success in your exam.

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 Question Review:

UNIT – 01

Q1. Necessity of protection system.

Q2. Types of fault.

Q3. Current limiting reactor.

Q4. Per unit system basic.

Q5. Symmetrical fault calculation (one numerical).

UNIT – 02

Q1. HRC fuse (construction, working                                     6 Marks.

Q2. Arc formation process , Arc extinction process.

Q3. Terms related with circuit breaker. 

Q4. Circuit breaker (SF6 , Vaccum , Bulk oil CB, MCB miniature CKT breaker).                          6 Marks. (1 Questions is fix)

UNIT – 03

Q1. Relay related term.

Q2. Types of relay and basic operation.

Q3. Over current relay.

Q4. Differential relay , distance relay , directional relay.

UNIT – 04 

Q1. Differential protection of alternator. (VVI)

UNIT – 05

Q1. Differential protection of transformer.

Q2. Buchholz relay.

Q3. Earth fault protection of transformer.

UNIT – 06

       NO IMPORTANT

UNIT – 07 

Q1. Differential pilot wire protection of X – mission line.

Q2. Bus-bar protection.

Q3. Distance protection of transmission line.

UNIT – 08

Q1. Importance and types of Earthing.

UNIT – 09

Q1. Cause of over voltage.

Q2. Protection of transmission line from direct stroke.

Q3. Types of lightning arresters.

Air gap

Horn type

 ( Construction & Working )

 All the best all my dear student. 
                        By :- Er. Jyotish kumar

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