The correct sequence for descending order of machinability is _____________________?
(A) grey cast iron, low carbon steel, wrought iron
(B) low carbon steel, grey cast iron, wrought iron
(C) wrought iron,low carbon steel, grey cast iron
(D) wrought iron, grey cast iron, low carbon steel
(D) grey cast iron, wrought iron, low carbon steel
Aluminium bronze contains aluminium and copper in the ratio of___________________?
(A) 50 : 50
(B) 40 : 60
(C) 60 : 40
(D) 10 : 90
(D) 90 : 10
Muntz metal contains copper and zinc in the ratio of________________?
(A) 50 : 50
(B) 40 : 60
(C) 60 : 40
(D) 20 : 80
(D) 80 : 20
If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water________________?
(A) 51 cm
(B) 50 cm
(C) 52 cm
(D) 52.2 cm
(D) 51.7 cm
Dimensions of surface tension are___________________?
(A) MlL°T2
(B) MlL°Tx
(C) MlL r2
(D) MlL2T2
(D) MlL°t
Which of the following meters is not associated with viscosity____________________?
(A) Red wood
(B) Say bolt
(C) Engler
(D) Orsat
(D) none of the above
A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm2 and a volume of 0.039 m3 at 150 kg/cm2. The bulk modulus of elasticity of liquid is___________________?
(A) 400 kg/cm2
(B) 4000 kg/cm2
(C) 40 x 105 kg/cm2
(D) 40 x 106 kg/cm2
(D) none of the above
Surface tension__________________?
(A) acts in the plane of the interface normal to any line in the surface
(B) is also known as capillarity
(C) is a function of the curvature of the interface
(D) decreases with fall in temperature
(D) has no units
A balloon lifting in air follows the following principle_____________________?
(A) law of gravitation
(B) Archimedes principle
(C) principle of buoyancy
(D) all of the above
(D) continuity equation
The bulk modulus of elasticity with increase in pressure__________________?
(A) increases
(B) decreases
(C) remains constant
(D) increases first up to certain limit and then decreases
(D) unpredictable