set 1 me von korman se 5.68 aa rha hai .. kya isko challange kr sakte hain ..please yr koi btao
Set3. Kisi ne vapour copmression cycle waala kiya. Asked enthalpies difference b/w 1 and 0. Even made easy hasnt given answer of that
Set 2 Qno 43..
QUESTION OF "Fundamentals of Heat and Mass Transfer 7th Edition - Bergman, Lavine, Incropera, DeWitt"
.This question is seems to be similar like Q nO 43 o SET 2
Q No. 5.68 In a manufacturing process, long rods of different diameters are at a uniform temperature of 400 C in a curing oven, from which they are removed and cooled by forced convection in air at 25 C. One of the line operators has observed that it takes 280 s for a 40-mm diameter rod to cool to a safe-to-handle temperature of 60 C. For an equivalent convection coefficient, how long will it take for an 80-mm-diameter rod to cool to the same temperature? The thermophysical properties of the rod are 2500 kg/m3, c 900 J/kg K, and k 15 W/m K. Comment on your result. Did you anticipate this outcome?
Solution given is
The simplest approach to explaining the relationship between to and the diameter follows from the lumped capacitance analysis, where for the same θ/θi, we expect Bi*Fo= constant.
i.e if we solve it like this than we get 5 hrs.
SET 2 ANYONE is contesting for 240,-240Mpa.
SET 2 ANYONE IS CONTESTING FOR question 49 grey cast iron Casting PATTERN RATIO .9126
Set 2 k doubtful questions. 1 grey cast iron 2 lumped heat 3 smart city Any other
SET 2 QUES NO-43 HMT QUESTION
CENTRELINE TEMP VARIES WITH FOURIER NO IN CYLINDER.PLEASE REFER HEISLER CHART.
finally down to 63 marks,,,set 2,,,,,,,arey yr ab only a heavy normalization could help,,,,,,may be we could hv a last laugh,,,,,,,abhi tk to all goin adversely,,,,,,
set 2 wale dont be panic there may be as much as 10 marks normalisation as what happened in last yr civil nd computer science...last yr even mechanical set 1 was not hard but 4 marks given...so set 2 60 nd set 3 70 more likely to be same...these r for those who r in race I m out of race best of luck for all ... .Nd other set guy plzz dont get angry set 2 already fu**ked up...u already have upper hand..
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Any body getting 80+ ?. Iisc ne apne patte show kiye aur sab pack ho gaye.
as per my experience if topper score x marks then upto x-20 u will be under 1000 later in 10 marks rank will reach upto 2500
Less lesser vale ka sahi diya kya....lesser k liye koi challenge karra kya??
SET 2 QUES NO-43 HMT QUESTION
what do you think guys ans is 2.5 or 5?comment.
in grey cast iron ques all standard books use positive allowance instead -ve allowance & in kalpakjian they write" to avoid tearing use shrinkage allowance or patternmaking allowance" instead of compensating the casting dimension.
what is the gate score required for IIT DELHI....
Is it beneficial to take branches like industrial and aerospace in top iit's?
Which key released by iisc turned out to be shocking ?
Claim kaise karna hai??
Final marks ?????
- <83
- 85+
- <78
- <79
- <81
- <85
- <65
- <70
- <74
- <76
0 voters
Bhailog cutoff kya jayega😕