This set of Mechanical Operations Multiple Choice Questions & Answers (MCQs) focuses on “Jet Mixers”. 1. A jet mixer depends on which of the following forces? a) Gravitational force b) Centrifugal force c) Centripetal force d) Magnetic force 2. A jet mixer ideally mixes which of the following? a) Liquids and solids b) Slurries with … Read more
This set of Mechanical Operations Multiple Choice Questions & Answers (MCQs) focuses on “Power”. 1. Using Rittinger’s law, calculate the power required to crush 12 ton/hr of rocks, if 10 ton/hr rocks were crushed at a power of 9 hp. The diameter of the rocks was reduced from 3 cm to 0.5 cm in each … Read more
This set of Mechanical Operations Multiple Choice Questions & Answers (MCQs) focuses on “Velocity Patterns and Velocity Gradient”. 1. Which one of the following is the correct unit of velocity gradient? a) ms-1 b) m3s-1 c) s-1 d) m 2. Velocity gradient has units similar to which of the following quantities? a) Acceleration b) Distance … Read more
This set of Mechanical Operations Multiple Choice Questions & Answers (MCQs) focuses on “Flow”. 1. Which of the following velocity components are observed in an agitator? a) Radial, Axial, Longitudinal b) Radial, Inclined, Longitudinal c) Inclined, Axial, Radial d) Axial, Inclined, Longitudinal 2. The radial velocity component acts in the direction ____ a) Parallel with … Read more
This set of Mechanical Operations Question Paper focuses on “Draft Tubes”. 1. How does the return flow to an impeller approaches the impeller? a) From above b) From below c) From center d) From all directions 2. Impeller mixers should always have draft tubes. a) True b) False 3. Draft tubes help to control ________________ … Read more
This set of Mechanical Operations Multiple Choice Questions & Answers (MCQs) focuses on “Paddle”. 1. Which of the following type of paddle agitators are most commonly used? a) Two Bladed b) Three Bladed c) Four Bladed d) Two bladed and four bladed 2. In some designs the blades conform to the shape of a dished … Read more
This set of Mechanical Operations Multiple Choice Questions & Answers (MCQs) focuses on “Shrouded Turbine”. 1. Which of the following is the correct energy conversion in a wind turbine? a) Electrical energy to kinetic energy b) Electrical energy to mechanical energy c) Kinetic energy to electrical power d) Kinetic energy to any desired form of … Read more
This set of Mechanical Operations Multiple Choice Questions & Answers (MCQs) focuses on “Open Turbine”. 1. Which of the following impellers is not an example of axial flow impeller? a) Propeller b) Hydrofoils c) Pitched turbines d) Ruston 2. The range of mixing operation of the turbine based on viscosity in a batch process is … Read more
This set of Mechanical Operations Multiple Choice Questions & Answers (MCQs) focuses on “Propeller”. 1. Wire belts have an operating range of _______ a) 160 to 1416 oC b) 500 to 600 oC c) 156 to 800 oC d) 480 to 1000 oC 2. Carrying idlers are inclined at an angle of ____ a) 5 … Read more
This set of Mechanical Operations Questions and Answers for Aptitude test focuses on “Properties of Impellers”. 1. As particle size is reduced _____ a) Screening becomes progressively more difficult b) Screening becomes progressively easier c) Capacity of screen is increased d) Effectiveness of screen is increased 2. The speed of a rotary drum vacuum filter … Read more
