# Grinding ratio is defined as

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# A steel bar 200 mm in diameter is turned at a feed of 0.25 mm/rev with a depth of cut of 4mm. The rotational speed of the work piece is 160rpm. The material removal rate in mm3/s is

1.  160

2.  167.6

3.  1600

4.  1675.5

4

1675.5

Explanation :
No Explanation available for this question

# For cutting double start screw threads pitch 1.0 mm on the lathe, the thread cutting tool should have a feed rate of

1.  0.5 mm/rev

2.  1.0 mm/rev

3.  2.0 mm/rev

4.  4.0 mm/rev

4

2.0 mm/rev

Explanation :
No Explanation available for this question

# A milling cutter having 10 teeth is rotating at 100rpm. The table feed is set at 50mm per minute. The feed per tooth in mm is

1.  5

2.  0.5

3.  0.2

4.  0.05

4

0.05

Explanation :
No Explanation available for this question

# Match the products and their manufacturing process Products A. Porous bearing B. Fly wheels C. Double end spanners D. Plastic bottle Manufacturing process 1. Powder metallurgy 2. Casting 3. Closed die forging 4. Blow molding

1.  A-1, B-2, C-3, D-4

2.  A-1, B-2, C-4, D-3

3.  A-4, B-3, C-2, D-1

4.  A-2, B-1, C-3, D-4

4

A-1, B-2, C-3, D-4

Explanation :
No Explanation available for this question

# If the number of double stokes per minute in a shaper is calculated by (0.643 X cutting speed in mm/min)/ length of the stroke in m. Then the return speed is faster than the cutting speed by

1.  40%

2.  60%

3.  80%

4.  100%

4

80\%

Explanation :
No Explanation available for this question

# Match the following List -1 List -2 A. Grinding 1. Compounded oil B. Tapping 2. EP additive oil C. Automatics 3. Chemical fluids D. Broaching 4.Straight fatty oils

1.  A-3, B-4, C-1, D-2

2.  A-3, B-4, C-2, D-1

3.  A-4, B-3, C-1, D-2

4.  A-2, B-4, C-1, D-3

4

A-3, B-4, C-1, D-2

Explanation :
No Explanation available for this question

# For cutting double start screw threads of pitch 2.0mm on a lathe, the thread cutting tool should have a feed rate of

1.  05 mm/rev

2.  1.0 mm/rev

3.  2.0 mm/rev

4.  4.0 mm/rev

4

2.0 mm/rev

Explanation :
No Explanation available for this question

# The diameter and rotational speed of a job are 100mm and 500 rpm respectively. The high spots (chatter marks) are found at a spacing of 30 deg on the job surface. The chatter frequency is

1.  5 Hz

2.  12 Hz

3.  100 Hz

4.  500 Hz

4

100 Hz

Explanation :
No Explanation available for this question

1.  5mm

2.  0.05mm

3.  0.4 mm

4.  0.2mm

4