Cochin Shipyard Assistant Engineer Paper 2020 – Engineering
Exam Date – 11th Feb 2020
The direction of rotation for a single shaft fixed pitch propeller looking form aft of propeller is
(a) Clockwise
(b) Counter Clockwise
(c) Both clockwise and couter clockwise
(d) No specific direction
a
The direction of rotation for a single shaft controllable pitch propeller looking form aft of properller is
(a) Clockwise
(b) Counter clockwise
(c) Both clockwise & counter clockwise
(d) No specific direction
b
Which of the following non destructive testing is used to detect change in composition of any material?
(a) Radiography
(b) Eddy current test
(c) Ultrasonic test
(d) Liquid penetration test
a
which of the following defects occur due to melting or burning away of base metal in welding?
(a) Porosity
(b) Cold Cracking
(c) Hot cracking
(d) Under cut
d
Which of the following pump is generally used to pump high viscous fluids?
(a) Centrifugal
(b) Reciprocating
(c) Air Lift
(d) Screw
d
Which of the following pump from others in the same group?
(a) Screw Pump
(b) Gear Pump
(c) Cam and Piston pump
(d) Plunger pump
d
Burr is
(a) Sharp edge remaining on the metal after curing, stamping or machining
(b) A marking on work piece to identify for correct position on a work piece
(c) Burnt surface of casting
(d) Un machined portion of work piece
a
The intrument used for finding the velocity of liquid is
(a) Venturimeter
(b) Pitot tube
(c) Orifice meter
(d) All of the options
b
Standard thread length for bolts is
(a) 2d+4
(b) 2d+6
(c) 2d+8
(d) 2d+10
b
Internal weld defects are detected by
(a) Magnetic particle method
(b) Die penetrant method
(c) X-Ray method
(d) Destructive testing
c
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