Q4) The good insulation material has A) Lower thickness. B) Lower thermal resistance. C) Larger thermal resistance. D) Larger thermal conductivity. E) None of them. Q5) Bernoulli's theorem states that A) The total head isn't constant between any two points along the streamline of a flowing fluid. (B) The total head is constant between any two points along the streamline of a flowing fluid. C) The velocity head is constant between any two points along the streamline of a flowing fluid D) The pressure head is constant between any two points along the streamline of a flowing flui E) None of them. Q6) The friction loss factor of the fluid in a pipe depends on A) Types of flow. B) Surface roughness. C) Pressure of flow. (D) A&B. E) A&C. Q7) The heat transfer through the materials is inversely proportional to its A) Thermal conductivity. B) Temperature. C) Roughness of surface. D) Thickness of material. E) Cross sectional area