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SSC JE 2019-20: Technical Quiz 12

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Question 1

A prismatic bar, as shown in the figure is supported between rigid supports. The support reaction will be
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Question 2

An inventor states that his new conceptual engine, while operating between temperature limits of

and

, will reject 50% of heat absorbed from the source. What type of cycle will this engine have?

Question 3

The pressure exerted by dry air is 70% of that of atmospheric pressure. If p_vs=0.6 bar, the relative humidity is

Question 4

A composite slab has two layers of different materials having internal conductivities k₁ and k₂. if each layer has the same thickness then what is the equivalent thermal conductivity of the slab?

Question 5

A gas turbine operating on Brayton cycle has the maximum temperature of 1200 k and the minimum temperature of 300 k . the cycle efficiency for the maximum work capacity will be

Question 6

According to Prandtl Blasius relation, the thickness of boundary layer in turbulent flow is______.

Question 7

Select the option, which correctly maps all the items in List A to their corresponding items present in List B:

Question 8

Match List-I with List-II and select the correct answer using the code give below the lists:
List-I
[A]. Car dashboard
[B]. Aircraft windows
[C]. Conduit pipes
[D]. Bearing and gears
List-II
[1]. Poly vinyl chloride (PVC)
[2]. TEFLON
[3]. Polyacrylonitrile
[4]. Polymethylmethacrylate

Question 9

The bore and stroke of the cylinder of a 6-cylinder engine working on an Otto-cycle are 17 cm and 30 cm respectively, total clearance volume is 9225 cm³, then what is the compression ratio?

Question 10

The inter-arrival times at a tool crib are exponential with an average time of 10 minutes and the length of the service time 6 minutes assumed to be exponential. The probability that a person arriving at the booth will have to wait is equal to:

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