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SSC JE 2019 - 20 technical Quiz 43

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Question 1

Magnetic forming is an example of

Question 2

Metallic powders can be produced by ____.

Question 3

In a strained material one of the principal stresses is twice the other. The maximum shear in the same cases is $Description: F:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE-22-April\GATE-IES-ME-Strength-of-Materials_files\image123.png$ . Then, what is the value of the maximum principal stress?

Question 4

The knocking tendency in compression ignition engines increases with

Question 5

How are the velocity coefficient C_v, the discharge coefficient C_d and the contraction coefficient C_c of an orifice related?

Question 6

Bearings are compared based on their load carrying capacity, therefore the bearing whose load carrying capacity is independent of speed is;

Question 7

A cornot engine operates between

and

. If the engine produce 300 kJ of work, what is the magnitude of entropy change during heat addition?

Question 8

In order to have a low by-pass factor of a cooling coil, the fin spacing and the number of tube rows should be

Question 9

The ‘NTU’ (Number of transfer Units) in a heat exchanger is given by which one of the following?

where, U = Overall heat transfer coefficient
C = Heat capacity
E = Effectiveness
A = Heat exchange area

Question 10

In a reaction turbine the enthalpy drop in a stage is 60 units, the enthalpy drop in the moving blades is 32 units. The degree of reaction is _________.

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