FORM TURNING - Practice Mode

1) What does the letter 's' stands in the equation d =Y-2(s+r) in taper measurement?

Diameter over the roller at large end Diameter over the rollers at small end Radius of the rollers Distance from the centre of the roller to the end of the component

Correct Answer: Distance from the centre of the roller to the end of the component

2) How many precision rollers required for measuring angle of tapered component?

1 2 3 4

Correct Answer: 2

Explanation:

A chord that passes through the center of a circle is called a diameter and is the longest chord of that specific circle.

3) What is the recommended cutting speed for turning mild steel using H.S.S tool?

25-40 m/min 35-70 m/min 40-70 m/min 35-50 m/min

Correct Answer: 35-50 m/min

Explanation:

Given : perimeter of arc is 64.8cm and radius is 12.4 cm
To find : length of arc of sector
Solution:
Perimeter of an arc = radius + arc length + radius
Perimeter of arc = 64.8 cm
radius = 12.4 cm
64.8 = 12.4 + arc length + 12.4
64.8 = 24.8 + arc length
arc length = 40 cm

4) What is the recommended feed rate for turning cast iron (grey) using H.S.S tool?

0.08-0.03 mm/rev 0.2-1.00 mm/rev 0.2-1.5 mm/rev 0.15-0.7 mm/rev

Correct Answer: 0.15-0.7 mm/rev

5) How the cutting speed is expressed?

Foot/min Meter/sec Meter/min Revoluation/min

Correct Answer: Meter/min

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