1. The centrifugal compressors are generally used for refrigerants that require A. small displacements and low condensing pressures…

1. The wet bulb temperature during sensible heating of the air A. remains constant B. increases C. decreases…

1. A compound pipe of diameter d1, d2 and d3 having lengths l1, l2 and l3 is to be replaced by an equivalent pipe of uniform diameter d and of…

1. One liter of water occupies a volume of A. 100 cm3 B. 250 cm3 C. 500 cm3 D. 1000 cm3 2.…

1. According to Kelvin-Planck's statement of second law of thermodynamics, A. it is impossible to construct an engine…

1. All the commercial liquid fuels are derived from natural petroleum (or crude oil). A. True B. False…

1. The maximum or minimum value of the swaying couple is 2. For an involute gear, the ratio…

1. The ratio of the actual damping coefficient to the critical damping coefficient is called the damping factor.…

1. When a body of mass moment of inertia I (about a given axis) is rotated about that axis with an…

1. The velocity ratio of a simple wheel and axle with D and d as the diameters of…