Polyfuses is a new standard for circuit protection. It is re-settable by itself. Many manufactures also call it as Polyswitch or Multifuse. Polyfuses are not fuses but Polymeric Positive temperature Coefficient Thermistors (PPTC). We can use several circuit protection schemes in 'power supplies to provide protection against fault condition and the resultant and over temperature damage. Current can be accomplished by using resistors, fuses, switches, circuit breakers or positive temperature coefficient devices.Resistors are rarely an acceptable ....etc

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141/2015
Maximum : 100 marks
Time : 1 hour and 15 minutes

1.The value of absolute permittivity is :
(A)8.854 x 10-12 H/M
(B) 8.854 x 10-12 F/M
(C ) 4d x 10-7 H/M
(D) 46 x 10-7 F/M

2.The equation for find out the energy stored in a coil is :
(A)1/2 LI2
(B) 1/2 LØ2
(C ) /2 LB2
(D) X LI

3.The Dummy coil used in a DC generator :
(A)To compensate Demagnetizingeffect
(B)To compensate cross magnetizing effect
(C )To reduce commutation
(D)For Mechanical balancing

4.The transformer oil used in transformer ....etc

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please give inter district transfer forms ....etc

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Poly Fuse

Polyfuse is a new standard for circuit protection. It is resettable. Many manufacturers also call it polyswitch or multifuse. Polyfuses are not fuses but polymeric positive temperature co-efficient (PPTC) thermistors.

Current limiting can be accomplished by using resistors , fuses , switches or positive temperature co-efficient devices. Resistors are rarely an acceptable solution because the high power resistors that are usually required are expensive. One-shot fuses can be used, but they might fatigue, and they must be replaced ....etc

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1.Which among the following set of quantum numbers is not allowed for the values of (n, 1, m, s) ?
(A)(2,1, 1, 2)
(B)(1,0,1, +1/2)
(C )(2, 1, 1, +1/2)
(D)(4, 3, -1, -1/2)

2.The effective nuclear charge in the electron in He atom is :
(A)2
(B)1.7
(C )1.15
(D)1.65

3.The electron configuration of Fe2+ is :
(A) |Ar) 3d5 4s°
(B) (Ar| 3d6 4s°
(C ) (Arl) 3d4 4s2
(D) 3d5 4s°

4.The radius ratio between 0.025 and 0.414 favours the coordination number of:
(A)8
(B)4
(C )6
(D)3

5.sp3 hybridization res ....etc

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154/2015
Maximum : 100 marks
Time : 1 hour and 15 minutes

1.In S.I. units Joule is expressed as :
(A)Nm/s
(B) Nm
(C ) Nm2
(D) mN

2.Modulus of rigidity is experimentally the ratio of:
(A)Linear stress to longitudinal strain
(B)Hydrostatic stress to volumetric strain
(C )Axial stress to lateral strain
(D)Shear stress to shear strain

3.The definition of Specific fuel consumption is :
(A)Fuel consumption per BHP
(B) Fuel consumption for hour
(C ) Fuel consumption per hour per BHP 
(D) Fuel consumption pe ....etc

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POLY JET PROCESS

PRESENTED BY
K.SRI RAM VIKAS
V.S.R.KISHORE.B
D.M.S S.VH COLLEGE OF ENGINEERING, Machilipatnam, AP- 521002


Different types of RP methods

The Poly jet process
Stereo lithography (SLA for stereo lithography apparatus),
Selective laser sintering (SLS),
Fused deposition modeling (FDM),
Laminated object manufacturing (LOM),
Inkjet systems and three dimensional printing (3DP).
Solid Ground Curing


Rapid prototyping is a layer -based fabrication that quickly create ....etc

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170/2016
Maximum : 100 marks
Time : 1 hour and 15 minutes

1. Vaikam Sathyagraha was started at the time of?
(A) Sree Moolam Thirunal (B)Swathi Thirunal
(C ) Visakham Thirunal (D)Rani Lakshmi Bai

2.Who was known as “Kerala Valmeeki”?
(A) C.V. Raman Pillai (B) KumaranasanKumaranasan
(C ) N. Krishna Pillai (D)Vallathol

3.“Ethu Bhoomiyanu was the famous Drama written by?
(A) K Damodaran   (B)V.T. Bhattathirippadu
(C ) K.T. Muhammad (D)Premji

4.The Constitution of India was adopted on ? 
(A) January ....etc

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91/2015
Maximum : 100 marks
Time : 1 hour and 15 minutes

1.Panthalayani Kollam stands for :
(A) Koilandi
(B)Kollam
(C ) Quilon
(D)Alleppy

2.Puthuvaippu era in Kerala starts in :
(A) 1941
(B)1841
(C ) 1511
(D)1341

3.In which of the Asoka’s pillars Kerala is mentioned?
(A) 13 & 14
(B)12 & 14
(C ) 12 & 13
(D)14 & 15

4.Which fruit among the following are not bought by thePortuguese in India?
(A) Pineapple
(B)Orange
(C ) Papaya
(D)Guava

5.Buddha was born in which country?
(A) Bhutan
(B)Nepal
....etc

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sir, i want to start a poly house farming in puthencruz panchayath , ernakulam .how i can start with govt. support? please give technical & financial advice and where i can get the authorized agents in kerala?
thanking you ....etc

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