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ISRO Mechanical Engineering:Mini Mock Test 3
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Question 1
Flow measurements with a Prandtl-Pitot tube showed that the tip readings varied only across the flow while the side-opening readings varied only in the direction of flow. The type of flow is
Question 2
In a fully developed region of the pipe flow,
Question 3
Pressure loss for laminar flow through pipeline is dependent
Question 4
What is hydraulic diameter used in place of diameter for non-circular ducts equal to?
Question 5
The laminar boundary layer occurs when a cold fluid flows over a hot plate. In which of the following positions, the temperature gradient almost assumes zero value?
Question 6
The heat exchange between a small body having emissivity and area A1 and a large enclosure having emissivity and area A2 is given by:
What is the assumption for this equation?
What is the assumption for this equation?
Question 7
An oxygen and nitrogen mixture has transmissivity for heat radiations that is practically equal to
Question 8
If the annual demand of an item becomes half, ordering cost double, holding cost one-fourth and the unit cost twice, then what is the ratio of the new EOQ and the earlier EOQ?
Question 9
Consider the following statements:
PERT considers the following time estimates
1). Optimistic time
2). Pessimistic time
3). Most likely time
Which of these statements are correct?
PERT considers the following time estimates
1). Optimistic time
2). Pessimistic time
3). Most likely time
Which of these statements are correct?
Question 10
Which one of the following statements is not correct?
Question 11
a fillet weld is loaded parallel to its length by a load P. If the weld leg is h, the average shear stress on the throat area is
Question 12
The effect of increasing the stiffness of springs of centrifugal clutch is
Question 13
Which one of the following elements is an austenitic stabilizer?
Question 14
Which one of the following is the process to refine the grains of metal after it has been distorted by hammering or cold working?
Question 15
Which one of the following mediums is used for the fastest cooling rate of steel quenching _________?
Question 16
Increasing the number of reheating stages in a gas turbine to infinity, makes the expansion
Question 17
Which of the following are the limitations of powder metallurgy?
1. High tooling and equipment costs
2. Wastage of material
3. It cannot be automated
4. Expensive metallic powders
Select the correct answer using the code given below:
1. High tooling and equipment costs
2. Wastage of material
3. It cannot be automated
4. Expensive metallic powders
Select the correct answer using the code given below:
Question 18
In helical milling, the ratio of the circumference of the gear blank to the lead of the helix determines the
Question 19
Which one of the following is clearance fit?
Question 20
What is an azeotrope?
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