Basic Mechanical Engineering Questions - Quiz Set 26 Mech Quiz Quiz Questions 01. The coefficient of venturi-flume, generally, lies between (A) 0.3 to 0.45 (B) 0.50 to 0.75 (C) 0.75 to 0.95 (D) 0.95 to 1.0 02. Teflon is used for bearings because of (A) Low coefficient of friction (B) Better heat dissipation (C) Smaller space consideration (D) All of these 03. The process of under-cooling is generally brought about by (A) Circulating more quantity of cooling water through the condenser (B) Using water colder than the main circulating water (C) Employing a heat exchanger (D) Any one of the above 04. The thermal diffusivity for gases is generally __________ those for liquids. (A) Equal to (B) Less than (C) Greater than (D) None of these 05. The enlarging of an existing circular hole with a rotating single point tool is called (A) Boring (B) Drilling (C) Reaming (D) Internal turning 06. During hot working of metals (A) Poor surface finish is produced (B) Scale is formed on the metal surface (C) Close tolerances cannot be maintained (D) All of these 07. A column that fails due to direct stress, is called (A) Short column (B) Long column (C) Weak column (D) Medium column 08. The specific gravity of water is taken as (A) 0.001 (B) 0.01 (C) 0.1 (D) 1 09. An error of 1% in measuring head over the crest of the notch (H) will produce an error of __________ in discharge over a triangular notch, (A) 1 % (B) 1.5 % (C) 2 % (D) 2.5 % 10. In a cold chamber die casting machine, only nonferrous alloys with _________ are casted. (A) Low melting temperature (B) High melting temperature (C) Both (A) and (B) (D) None of these 11. A flow in which the quantity of liquid flowing per second is not constant, is called (A) Streamline flow (B) Turbulent flow (C) Steady flow (D) Unsteady flow 12. In spot welding, the spacing between two spot weld should not be less than (A) d (B) 1.5 d (C) 3 d (D) 6 d 13. The power transmitted by a belt drive is maximum when the maximum tension in the belt is __________ the centrifugal tension. (A) Equal to (B) Double (C) Three times (D) Six times 14. The factors to be considered for production scheduling are (A) Component design (B) Route sheet (C) Time standards (D) All of these 15. Oil separator in a refrigeration cycle is installed (A) Before compressor (B) Between compressor and condenser (C) Between condenser and evaporator (D) Between condenser and expansion valve 16. The cavitation in a hydraulic machine is mainly due to (A) Low velocity (B) High velocity (C) Low pressure (D) High pressure 17. In order to cut mild steel, the cutting angle of chisel should be ________degree. (A) 30 (B) 45 (C) 50 (D) 60 18. A ship with jet propulsion draws water through inlet orifices at right angles to the direction of its motion. The propelling force of the jet is waVr /g × (Vr - v). (Where a = Area of the jet, Vr = Relative velocity of the jet and ship = V + v, v = Velocity of the ship, and V = Velocity of the jet issuing from the ship) (A) Correct (B) Wrong (C) There is no Solution (D) Data is incorrect 19. The boiling point of carbon dioxide is _______ °C? (A) -20.5 (B) -50 (C) -63.3 (D) -78.3 20. The thrust force will increase with the increase in (A) Side cutting edge angle (B) Tool nose radius (C) Rake angle (D) End cutting edge angle Submit Test Next Quiz Tests: Set 01 Set 02 Set 03 Set 04 Set 05 Set 06 Set 07 Set 08 Set 09 Set 10 Set 11 Set 12 Set 13 Set 14 Set 15 Set 16 Set 17 Set 18 Set 19 Set 20 Set 21 Set 22 Set 23 Set 24 Set 25 Set 26
