68.

68.

70,

71.

72.

78.

74.

76.

In standard marking of a grinding wheel '51 - Ad6H5VS". Letter 'H' represents :
(A) Structure : (B) Type of bond
(C) Grain size ' (M) Grade

To check and set the spark plug gaps and tappet clearance in an engine :
(A) feelar gauge (B) snap gauge
(0) एण्ड gauge (D) inside caliper

The depth of the tooth space of a gear helow the pitch circle is called :
(५) addendum ‏رت‎ dedendum
(0 centre distance (D) ೦8

Which among the following joints is suitable for roofing work?
(ಸ) lap joint (B) एप्त joint
)0 hinged joint (D) double grooved seam joint

Interchangeability is normally applied for :
(A) * repairing of parts (ड) mass production
«(C) =ingle piece 07060000 (D) all the above

In the BIS system of limits and fits, 25 hole deviations are specified by using :
(ಗೆ) small letters (0) small letters with numbers
(C) small letters with tolerance (D) capital letters

Which one of the following abrasives is used for honing non-ferrous metals?
(ಗಿ) Aluminium oxide , 18) Silicon carbide
(€) Diamond (D) Boron carbide

The general ratio of soluble oil and water used as coolant is ‏؛‎
‎(ಗಿ) 10:1 (8) 1:10
(@ 0 0) 20:1

While machining cast iron, the coolant used should be :
(ക അജ (18) kerosene
(C) soluble oil (D) soft water

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