# Thermal conductivity is lower for

1.  wood

2.   air

3.  water at 1000C

4.  steam at 1 bar

4
Correct Answer :

air

Explanation :
No Explanation available for this question

# A pipe of 25mm outer diameter carries steam. The heat transfer coefficient between the cylinder and surrounding is 5 W/m2K. It is proposed to reduce the heat loss from the pipe by adding insulation having a thermal conductivity of 0.05 W/mK. Which one of the following statement is TRUE

1.  The outer radius of the pipe is equal to the critical radius

2.  The outer radius of the pipe is less than the critical radius

3.  Adding the insulation will reduce the heat loss

4.  adding the insulation will increase the heat loss

4
Correct Answer :

Adding the insulation will reduce the heat loss

Explanation :
No Explanation available for this question

# The orthogonal rake angle of the cutting tool in degree is

1.  zero

2.  3.58

3.  5

4.  7.16

4
Correct Answer :

zero

Explanation :
No Explanation available for this question

# The normal force acting at the chip-tool interface in N is

1.  1000

2.  1500

3.  2000

4.  2500

4
Correct Answer :

1500

Explanation :
No Explanation available for this question

# Component process A. Square hole in a high strength alloy B. Square hole in a ceramic component C. Blind holes in a die D. Turbine blade profile on high strength alloy 1. Milling 2. Drilling 3. ECM 4. Jig boring 5. EDM 6. USM

1.  A-5, B-6, C-2, D-3

2.  A-5, B-6, C-2, D-1

3.  A-5, B-6, C-1, D-4

4.  A-5, B-3, C-2, D-4

4
Correct Answer :

A-5, B-6, C-2, D-3

Explanation :
No Explanation available for this question

# Assuming approach and over-travel of the cutting tool is to be zero, the matching time in mm is

1.  2.93

2.  5.86

3.  6.66

4.  13.33

4
Correct Answer :

2.93

Explanation :
No Explanation available for this question

# Neglecting the contribution of the feed force towards cutting power, the specific cutting energy in J/mm3 is

1.  0.2

2.  2

3.   200

4.  2000

4
Correct Answer :

2

Explanation :
No Explanation available for this question

# The total true strain applied and the final length (in mm), respectively, are

1.  2.45 and 817

2.  2.45 and 345

3.  3.02 and 2043

4.  3.02 and 33

4
Correct Answer :

3.02 and 2043

Explanation :
No Explanation available for this question

# Neglecting friction and redundant work, the force (in kN) required for drawing the bar through the first die, is

1.  15.71

2.  10.21

3.  6.77

4.  4.39

4
Correct Answer :

4.39

Explanation :
No Explanation available for this question

# Match the following non-traditional machining process with the corresponding material removal mechanisms: Machining process Mechanism of material removal P. Chemical matching 1. Erosion Q. Electro-chemical matching 2. Corrosive reaction R. Electro-discharge matching 3. Iron displacement S. Ultrasonic machining 4. Fusion & vaporization

1.  P-2, Q-3, R-4, S-1

2.  P-2, Q-4, R-3, S-1

3.  P-3, Q-2, R-4, S-1

4.  P-2, Q-3, R-1, S-4

4
Correct Answer :

P-2, Q-3, R-4, S-1

Explanation :
No Explanation available for this question

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