1) Hole has patches of poor surface finish. Which one of the following is the cause of this defect?

The bored hole has insufficient reaming allowance

Wrong selection of the reamer for the job

Insufficient coolant supply

Answer is:

Insufficient coolant supply

Explanation:

ISRO Technician-B Turner Question Paper - 2015 (Set - 1) with Answer Key

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2) Circumference of a circle is 66 mm find its diameter

21 mm

42 mm

33 mm

11 mm

Answer is:

21 mm

3) The included angle of the countersinking of a centre drill of type 'B' used for protecting the center hole is

75 degree

90 degree

100 degree

120 degree

Answer is:

Invalid Question

4) Choose the correct formula to find the dia of job d in mm if the cutting speed (V) in m/min and the revolution per minute (n) are given

d = (1000 xV)/(nxn)

d = (nxn) / (1000 xV)

d = (1000 xn)/(Vxn)

d = (1000 xn)/(nxV)

Answer is:

d = (1000 xV)/(nxn)

5) High speed steelis an alloy of

Tungsten, steel, copper

Steel, Nickel

Tungsten, chromium, vanadium

Nickel

Answer is:

Tungsten, chromium, vanadium

ISRO Technician-B Turner Question Paper - 2015 (Set - 1) with Answer Key

For more MCQ's Click Here

1) Hole has patches of poor surface finish. Which one of the following is the cause of this defect?

Insufficient coolant supply

ISRO Technician-B Turner Question Paper - 2015 (Set - 1) with Answer Key

Related ISRO Technician-B Turner Question Paper - 2015 (Set - 1) with Answer Key

2) Circumference of a circle is 66 mm find its diameter

21 mm

3) The included angle of the countersinking of a centre drill of type 'B' used for protecting the center hole is

Invalid Question

4) Choose the correct formula to find the dia of job d in mm if the cutting speed (V) in m/min and the revolution per minute (n) are given

d = (1000 xV)/(nxn)

5) High speed steelis an alloy of

Tungsten, chromium, vanadium

ISRO Technician-B Turner Question Paper - 2015 (Set - 1) with Answer Key