sub - Switchgear and protection Utu previous year question papers

B.tech Examination papers dec 2014
sub - Switchgear and protection
Utu previous year question papers
uttarakhand technical university previous question papers

Time : 3 hrs
Q1: Attempt any four :

1. Explain static relay and write its merits and demerits.
2. Explain electromagnetic impedance relay.
3. What are the various types of over current relays? Discuss their are of applications.
4. Explain Directional Over-current relay?
5. The current rating of a relay is 5A. PSM=2, TSM=0.3, CT ratio=400/5, fault current= 4000A. Determine the operating time of the relay. At TMS= 1, operating time various PSM are:
   PSM=                                2         4        5        8        10        20
   operating time in seconds=  10       5        4        3       2.8        2.4

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Utilization of Electrical Energy and Traction. UTU (uttrakhand technical university previous year question papers)

B.tech question papers
sub- Utilization of Electrical Energy and Traction.
UTU (uttrakhand technical university
previous year question papers)
Dec 2014

Q1: Attempt any four:

1. What are the advantages of induction heating? Give classification of various heating methods.
2. What is Ajax-Wyatt Furnace? Describe construction, principle of operation and application of this furnace.
3. Discuss advantages of electrically produced heat. State the properties of a heating element used for this heating.
4. Explain with help of neat sketch the working of Ajax Wyatt furnace.
5. A 40KW 3 phase 400v, resistance oven is to employ nichrome strip 0.25mm thick for the three star-connected heating elements. If the wire temperature is to be 1200C and that of the charge is to be 800C, estimate a suitable width for the strip. Assume emissivity= 0.9 and radiating efficiency=0.5. Also determine the temperature of the wire when the charge is cold.
6. What are the factors which limit the choice of frequency in induction and dielectric heating?

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one more step4success (optimistnet.com)

What is Optimistnet ?

The World we live in is Full of negativity

Your best friends might put you down

Most people will tell you that you will never make it

You open the news and get exposed to so many negative messages

You walk in the streets see angry and sad faces.

All of these negative messages pass directly to your brain and shape your beliefs then in the end you start wondering why are you sad, pessimistic or even depressed.

The only way to prevent your mood from being ruined is to balance this negativity by getting exposed to some positivity as well. This is why we created www.optimistnet.com

The first social network that has nothing but motivating, positive and uplifting content, Join optimistnet today and get your daily dose of uplifting positive messages.

If you really want to become successful and want to achieve what you believe in, then you should follow those positive and optimist people who will help you. 

Bhagwant Singh (me) personally use this network to remain positive. Don't let negative, arrogant and narcissist people affect your dreams. Good luck.!:)

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