The coefficient of friction depends on

8) Which of the following is the example of lever of first order?

Answer is:

Pairs of scissors

Explanation:

9) Cutting forces at the cutting tool can be measured by

Answer is:

A dynamometer

Explanation:

10) The method of joining metal surface by introducing a non ferrous alloy with melting point above 400° C is known as

Answer is:

Brazing

Explanation:

Brazing is a method of joining metal surface by introducing a non ferrous alloy with melting point above 400° C.

11) Blow holes are casting defects

Which occur due to some sand shearing from the cope surface

Which takes the form of internal voids of surface depression due to excessive gaseous material not able to escape

Which occur due to discontinuity in metal casting resulting from hindered contraction

Caused by two streams of metals that are too cold to fuse properly

Answer is:

Which takes the form of internal voids of surface depression due to excessive gaseous material not able to escape

Explanation:

When gases entrapped on the surface of the casting due to solidifying metal, a rounded or oval cavity is formed called as blowholes. These defects are normally present in the cope part of the mold.

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The coefficient of friction depends on

Nature of surface

For More KPCL JE Mechanical Question Paper - 2018 with Answer Key

Related KPCL JE Mechanical Question Paper - 2018 with Answer Key

8) Which of the following is the example of lever of first order?

Pairs of scissors

9) Cutting forces at the cutting tool can be measured by

A dynamometer

10) The method of joining metal surface by introducing a non ferrous alloy with melting point above 400° C is known as

Brazing

11) Blow holes are casting defects

Which takes the form of internal voids of surface depression due to excessive gaseous material not able to escape

For More KPCL JE Mechanical Question Paper - 2018 with Answer Key