Machine Design (2171909) MCQs

MCQs of Design of Gear Box for Machine Tools

Showing 1 to 10 out of 19 Questions
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1.

What is harmonic progression?

(a)

The difference between the reciprocal of two successive spindle speeds is constant
(b)

The difference between two successive spindle speeds is constant
(c)

The ratio of two successive spindle speeds is constant
(d)

The ratio of two successive spindle speeds is variable
Answer:

Option (a)

2.

Ratio of two spindle speeds is constant in _________ progression.

(a)

arithmetic
(b)

geometric
(c)

harmonic
(d)

arithmetic and geometric
Answer:

Option (b)

3.

What is the purpose of using a gearbox?

(a)

To get varying torque
(b)

To get varying speed
(c)

To get varying torque and speed
(d)

To get varying strength
Answer:

Option (c)

4.

__________ progression series is preferred over others as it gives minimum loss of economic cutting speed in the whole rpm range as well as it gives better gearbox design.

(a)

Arithmetic
(b)

Harmonic
(c)

Geometric
(d)

Arithmetic and harmonic
Answer:

Option (c)

5.

If the number of stages in a gearbox is 'n', how many vertical lines will be drawn at a convenient distance in a structure diagram?

(a)

n
(b)

n+1
(c)

n-1
(d)

n/2
Answer:

Option (b)

6.

How many horizontal lines will be drawn in a structure diagram of a gearbox if the number of stages is 'n' and the number of spindle speed steps is 'z'?

(a)

n
(b)

n+1
(c)

z
(d)

z+1
Answer:

Option (c)

7.

The spacing between the horizontal lines of a structure diagram is taken as ______.

(a)

sin ɸ
(b)

cos ɸ
(c)

tan ɸ
(d)

log ɸ
Answer:

Option (d)

8.

If the number of speed steps required in a gearbox is 4, how many numbers of stages will be preferred?

(a)

2
(b)

3
(c)

4
(d)

5
Answer:

Option (a)

9.

If the number of speed steps required in a gearbox is 9, how many numbers of stages will be preferred?

(a)

2
(b)

3
(c)

6
(d)

9
Answer:

Option (a)

10.

If the number of speed steps required in a gearbox is 12, how many numbers of stages will be preferred?

(a)

2
(b)

3
(c)

4
(d)

6
Answer:

Option (b)

Showing 1 to 10 out of 19 Questions
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