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SSC JE 2019 - 20 technical Quiz 48

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Question 1

Match list I with list II

List I                       

Type of joint            

A) Revolute                     

B) Cylindrical           

C) Spherical                     

List II

Motion constrained

1) Three

2) Five

3) Four

4) Two

5) Zero

Question 2

The ‘Crowning’ of the flat pulley is generally done _________.

Question 3

The length, coefficient of thermal expansion and Young’s modulus of bar A are twice of bar B. If the temperature of both bars is increased by the same amount while preventing any expansion, then the ratio of stress developed in bar A to that in bar B will be

Question 4

For a real thermodynamic cycle, which one of the following is correct?

Question 5

Air-conditioning has to be done for a hall whose RSH = 50 kW and RLH = 50 kW. There are no other sources of heat addition or leakages. What is the value of the RSHF?

Question 6

In an axial flow compressor, the ratio of pressure rise in the rotor blades to the pressure rise in the compressor in one stage is known as

Question 7

The condition in which Bernoulli's equation applies are
1) The flow must be inviscid.
2) The flow may be compressible.
3) The flow must be steady.
4) There should be only one stream line in the flow.

Question 8

Which of the following effects are possible due to residual stresses in welding?
1. Reduce dimensional stability
2. Weld cracking
3. Effect on fatigue strength
4. Reduction in the creep strength
Select the correct answer using the code given below:

Question 9

Which one among the following is the most effective strengthening mechanism of nonferrous metal?

Question 10

Consider the following
1). Increased cetane number.
2). Increased compression ratio.
3). Increased injection advance.
4). Engine speed.
Which of the above factors reduce physical delay in the diesel engine?
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