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 2 of 3.

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

(It's correct Tooth Proportions).

Rajam solanki said:   1 decade ago
This is wrong because addendum circle is always greater than dedendum circle.

Ani said:   8 years ago
Dedendum = 1.157*addendum.
Addendum = radial distance from pitch circle to top of tooth.
Dedendum = radial distance from pitch circle to base of the tooth.

Raghuprasad said:   8 years ago
Module m: Pitch diameter divided by number of teeth: m= D/T.
Circular pitch p: The width of a tooth and a space, measured on the pitch circle. Cp= π*D/T.
Diametral pitch P: The number of teeth of a gear per inch of its pitch diameter. Dp = T/D.

Ravi gupta said:   8 years ago
Pitch circle diameter is the product of module and not no of teeth.

Glorie said:   8 years ago
Please, is it must for the pitch circle diameter to be greater than the base circle diameter.

Alok said:   9 years ago
Please, give an explanation about option B.

Ravindra said:   9 years ago
Addendum is the distance from pitch circle to the teeth head, so it must be less than dedendum.

Gaurav said:   9 years ago
Very well said @Chandan.

Chandan said:   10 years ago
Guys the question said addendum not circle!


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