Mechanical Engineering - Workshop Technology - Discussion

5. 

For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately

[A]. 42 mm
[B]. 44 mm
[C]. 46 mm
[D]. 48 mm

Answer: Option C

Explanation:

No answer description available for this question.

Jjp said: (Jan 10, 2014)  
D = Square root of ((d*d)+(4dh)) = 46.09.

Gaurav said: (Nov 9, 2014)  
Blank volume = Cup volume.

(pie*D^2/4)*t = pie*d*h*t+(pie*d^2/4)*t.

D = blank dia.

d = cup dia.

h = cup height.

t = thickness.

Krunal Modi said: (Jul 25, 2015)  
Blank = (d^2+4dh)^1/2.

= (25^2+4*25*15)^1/2.
= (625+1500)^1/2.
= 46.09.

Sandeep Dicholkar said: (Sep 11, 2015)  
Since the thickness of the sheet is not given, how do you calculate?

Devikiran said: (Jun 19, 2016)  
The Thickness of material gets canceled.

Surajit said: (Sep 13, 2016)  
The thickness of the blank and the cup won't be same. Am I right?

Sahil said: (Nov 5, 2016)  
What is the correct Formula? Please tell me.

Loki said: (Dec 7, 2017)  
I am not understanding this, please explain clearly.

S.Rao said: (Jan 9, 2018)  
Formula please. Explain it.

Narayan said: (Apr 24, 2018)  
Blank dia = √{(d√) +(4dh)}.

Rajasekhar said: (Apr 27, 2018)  
Please explain it with the correct formula.

Ubong Sam said: (Jul 16, 2018)  
Here, how you got the square root? Please explain.

Md Shahood Alam said: (Apr 27, 2019)  
We know the formula of blank dia is,
D = π(d^2+4dh)

Where,
Blank dia (D)=? , Cup dia (d)=25mm, height (h)=15mm.
So,
D = π{(25*25)+(4*25*15)}.
D = π(625+1500),
D = 46.09,
D = 46.

Imthiyaz said: (Sep 9, 2019)  
How to solve it, can anyone explain?

Gujjar said: (Nov 5, 2019)  
What is a drawing?

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.