NMDC Junior Officer Trainee Mechanical Model Paper

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ISRO Propulsion Complex Mahendragiri Technical Assistant Mechanical Engineering Paper 2018
Date of Exam – 21st April 2018
Duration of Exam – 1 Hour 30 Minutes
No. of questions – 60 Nos.

A 10 tonne refrigeration system consumes 10kW of electrical energy. It’s Coefficient of Performance will be _____
(a) 10
(b) 3.5
(c) 0.35
(d) 35

A metal flat, 40 mm wide 10 mm thick section and 2 m length, is under axial compressive load of 40kN. If contraction in length is 1 mm and increase in width is 0.006 mm, What is the value of Poisson’s ratio?
(a) 0.06
(b) 0.3
(c) 0.1
(d) 0.4

For the same cross sectional area (or weight), _______ shafts have higher strength and rigidity thant _____ shafts.
(a) solid, hollow
(b) hollow, solid
(c) Bother are equal
(d) None of these

With reference to object size, choose the odd one among the following 2D transformations
(a) Translation
(b) Reflection
(c) Rotation
(d) Scaling

1 cubic meter of a gas at 5 bar pressure is compressed at constant temperature to 0.5 cubic meter. What is the final pressure?
(a) 2.5 bar
(b) 0.1 bar
(c) 10 bar
(d) None of these

In a wind turbine, _____ measures the wind direction and guides the yaw drive to position the rotor to face the wind.
(a) Speedometer
(b) Wind vane
(c) Anemometer
(d) None of these

A thermometer reads 73.5 degree Celcius and the correction from calibration curve is -0.35 degree Celcius in the measurement range of 70 to 90 degree Celcius. What is the ture value of the temperature?
(a) 73.85 degree Celcius
(b) 73.15 degree Celcius
(c) 70.35 degree Celcius
(d) 90.85 degree Celcius

A cylinderical tank of internal diameter 10 m is fabricated from 10 mm thick steel plate. What is the maximum tangential stress due to internal pressure of 4kPa?
(a) 1 MPa
(b) 4 MPa
(c) 3 MPa
(d) 0.5 MPa

________is the tool for organizing the workplace in a clean, efficient and safe manner to enhance producivity and enable standardized working.
(a) 5 S
(b) 3 D
(c) 6 Sigma
(d) None of these

Industrial RTDs for precise measurements are usually made from _____
(a) Silver
(b) Platinum
(c) Aluminium
(d) Steel

Last Updated on – 7th April 2022


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