Maximum angular velocity of connecting rod with a crank to connecting rod ratio 1 : 5 for a crank speed of 3000 rpm will be around ________.
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The index of expansion of dry saturated steam flowing through a nozzle is 1.135, then the critical pressure ratio of the following steam will be ________.
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The volumetric efficiency of a well designed SI engine is in the range of
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Volumetric efficiency of SI engine is in the range of 70-90%
If the diameter of a soap bubble is 2 cm and the surface tension is 0.1 N/m, then the pressure inside a soap bubble over the atmospheric pressure will be _________.
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Solution
Given: diameter of soap bubble (d) = 2 cm = 0.02 m
Surface tension = 0.1 N/m
Surface tension for soap bubble, (S.T.)
S.T = (P ×d/2)/4
0.1 = (P × 0.02⁄2)/4
P = 40 N/m2
In a strained material, normal stresses on two mutually perpendicular planes are σx and σy(both are a likes) and shears tress is τxy, and one of the principal stress will be zero only if
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For a real thermodynamic cycle, which one of the following is correct?
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For a real thermodynamic cycle, using clausius-cloperyox equation, φdQ⁄T<0
In a 1 ton capacity water cooler, water enters at 30°C at the rate of 20°L/h. If specific heat of water = 4.18 KJ/kg-k, then the outlet temperature of water is ________.
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A time standard for a data entry operator is to be specified. A job in rated at 140%, it takes 40 seconds to enter each record and the allowances are 20%. The normal time will be________.
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Vacuum environment is being required in which of the following welding techniques?
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In electron beam welding, vacuum environment is required. In EBW,a beam of high velocity electrons is exerted to the two material work-pieces to be joined.Vacuum environment prevents dissipation of electrons.
In a cotter joint, the width of the cotter at the centre is 50 mm and its thickness is 12mm. The load acting on the cottor is 60KN. Then the shearing stress induced in the cotter joint will be ________.
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