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ESE Prelims 2022 Achievers Quiz 24
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Question 1
Which one of the following is the major alloying element in Invar?
Question 2
In an axial flow compressor, stalling is the phenomenon of
Question 3
Two forces can be in equilibrium only if they are
(i) equal in magnitude
(ii) opposite in direction
(iii) collinear in action
(i) equal in magnitude
(ii) opposite in direction
(iii) collinear in action
Question 4
In a Hartnell governor, the mass of each ball is 2.5kg, maximum and minimum centrifugal forces on the balls are 2000 N and 100 N corresponding to radii 20cm and 15 cm respectively. Lengths of vertical and horizontal arms of the bell-crank levers are the same, then what is the spring stiffness in N/cm?
Question 5
Rolling operation is performed from a roller having roll diameter 20mm, if the coefficient of friction id, µ=0.2 , the maximum draft will be (in mm) ____.
Question 6
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:
Question 7
A small electric appliance uses 0.18 cm diameter wire with 0.061 cm thick insulation. Taking kinsulation=0.10 W/moC and h=50 W/m2oC, the critical thickness of insulation is
Question 8
What is the difference in pressure head , measured by a mercury-oil differential manometer for a 20 cm difference of mercury level ? (Sp. Gravity of oil=0.8)
Question 9
If Equation 2j-3>m , where ‘ j’ is number of joints, ‘m’ is no of members , frame is a ______.
Question 10
The method of reducing the hoop stress in a cylinder is ___________.
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