53,

54,

55,

56,

57.

58,

59,

60,

The function of a surge tank in a hydro-electric power plant is to :
(ಹಿ) Carry the water to the turbine nozzle

(8) Reduce the water hammer inside the penstock pipe occure during sudden clossure of
the nozzle

(9) Regulate the water flow rate to the turbine
(D) Increase the workdone by reducing pressure head

If an engine lathe is equiped with a four stepped conepully head stock and back gear
arrangement, then the total spindle speed obtained will be :

(ಹ) 4 ® 6 © 10 ©

Positive back rake angle for a carbide tool is preferred for machining :
(ಹ) Harder material (8) Softer material
(ಲ) Brittle material (D) கர materials

If the lathe spindle and lead screw rotate with same RPM while thread cutting operation.
Then the pitch of thread of the work piece will be :

(ಹಿ) Equal to the lead screw pitch

(B) Equal to half the pitch of lead screw
(C) Equal to the pitch of rack and pinion
(D) Equal to twice the lead screw pitch

Rough cutting, semifinishing and finishing operations are completed in a single stroke of tool
pass by using :
(ಹ) Boring tool (8) Reaming tool ‏(ت)‎ Drilling tool (D) Broaching tool

Total number of tools that can hold on a turret lathe is up to :
@A) 6 ൫ 14 © 10 o) 8

Dressing and truing related with :
(A) Grinding wheel (B) Milling cutter (C) Knurling tool (D) Gang drilling

Counter sinking is the operation of :

(A) Machining the entrance of the hole in a conical shape to accommodate screw head
(B) Enlarging the hole with a boring 1001

(~) Making internal threads

(D) पाण्ट stepped holes

9 122/2017
{P.T.O}