Mechanical Engineering - Machine Design - Discussion

Discussion Forum : Machine Design - Section 1 (Q.No. 42)
42.
Which of the following statement is correct for gears?
The addendum is less than dedendum
The pitch circle diameter is equal to the product of module and number of teeth
The pitch circle is always greater than the base circle
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
22 comments Page 1 of 3.

Atanu said:   1 year ago
Clearance = Dedendum - Addendum.
= 1.157 module - module.

Atanu said:   4 years ago
Addendum > Dedendum.

Pitch circle = [(πD)/T] .
D= Pitch cycle dia, T= Number of teeth.

Dedendum dia is a base circle dia .
so, Base circle < Pitch circle is always.

That's why a correct answer is an option [C].
(1)

Muhammad Saad said:   5 years ago
@All.

It is written pitch circle diameter =module * a number of teeth.

As we know that;
Module=pitch circle dia/no.of teeth.
So, option B is also correct.

Aditya raj said:   6 years ago
Given the answer is right guys.

VNS700 said:   6 years ago
The formula of module is diameter/no of teeth.

Hence option B.

Sid said:   6 years ago
Can anyone explain about option B?

Akhilesh Tiwari said:   7 years ago
Dedendum greater then addendum is the Right answer.

Dedendum= addendum + clearance so dedendum always greater then addendum.
(2)

Saif ul islam said:   7 years ago
Addendum is 1m.

Dedendum is addendum+clearance =1m + 0.157m=1.157m.
i.e 0.157 larger than addendum.

Mangesh said:   7 years ago
The correct Answer is C.
(1)

Rishi said:   8 years ago
Well Said @Sahid Parvez.

(It's correct Tooth Proportions).


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