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# GATE ME 2021 || Manufacturing Quiz 5 (App update required to attempt this test)

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Question 1

An orthogonal turning operation is carried out under the following conditions: rake angle = 5 °; spindle rotational speed = 400 rpm: axial feed = 0.4 m/min and radial depth of cut = 2 mm. The chip thickness,

*t*, is found to be 3 mm. The shear angle (in degrees) in this turning process is________{c}Question 2

A single point cutting tool with 0°rake angle is used in an orthogonal machining process. At a cutting speed of 180 m/min. the thrust force is 490 N. If the coefficient of friction between the tool and the chip is 0.7, then the power consumption (in kW) for the machining operation is _______

Question 3

A tube of 35 mm outside diameter was turned on a lathe and the following data was obtained:

Rake angle = 35 ° Cutting speed = 15 m/min

Feed rate = 0.1 mm/rev Length of continuous chip in one revolution = 60 mm

Cutting force = 2000 N Feed force = 800 N

Calculate shear plane angle

Rake angle = 35 ° Cutting speed = 15 m/min

Feed rate = 0.1 mm/rev Length of continuous chip in one revolution = 60 mm

Cutting force = 2000 N Feed force = 800 N

Calculate shear plane angle

Question 4

Better surface finish is obtained with a large rake angle because

Question 5

The tool life equation for HSS tool is VT

V = 45 m/min, f = 0.35 mm, d = 2.0 mm

If speed (V), feed (f) and depth of cut D. are increased individually by 25%, the tool life (in min) is

^{0.14}f^{0.7}d^{0.4}= Constant. The tool life (T) of 30 min is obtained using the following cutting conditions:V = 45 m/min, f = 0.35 mm, d = 2.0 mm

If speed (V), feed (f) and depth of cut D. are increased individually by 25%, the tool life (in min) is

Question 6

In a turning operation, the tool life of the carbide tool was found to be 20 min and 100 min, at cutting speeds of 120 m/min and 80 m/min respectively. The tool life of tool under same condition but at a cutting speed of 100 m/min will be _____ min.

T

T

T

_{1}= 20 min V_{1}= 120 m/minT

_{2}= 100 min V_{2}= 80 m/min- 655 attempts
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Sep 24ESE & GATE ME

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Krishn PratapMember since Aug 2020

Cleared GATE, Selected for JWM interview, Cleared RRB JE, Cleared SSC JE, MPPSC AE Mains Cleared