This set of Hydraulic Machines Questions and Answers for Entrance exams focuses on “Main Parts and Working “. 1. How many number of valves are required for the rotary pump? a) 0 b) 1 c) 2 d) 3 2. Reciprocating pump is divided into how many types, based on its cylinders? a) 0 b) 5 … Read more
This set of Hydraulic Machines Multiple Choice Questions & Answers (MCQs) focuses on “Reciprocating Pumps”. 1. Reciprocating pump is a ________ a) Negative displacement pump b) Positive displacement pump c) Diaphragm pump d) Emulsion pump 2. What happens to the reciprocating pump when left untouched? a) Efficiency decreases b) Wear and tear c) Surface expansion … Read more
This set of Hydraulic Machines Multiple Choice Questions & Answers (MCQs) focuses on “Effects and Precautions”. 1. The formation of vapour cavities is called _____ a) Static pressure drop b) Cavitation c) Isentropic expansion d) Emulsion 2. What is the degree of reaction denoted as? a) D b) R c) r d) d 3. Voids … Read more
This set of Hydraulic Machines Multiple Choice Questions & Answers (MCQs) focuses on “Main Characteristic Curves”. 1. The characteristic curves of a centrifugal pump, plots ______ required by the pump. a) Velocity b) Pressure c) NPSH d) Velocity and pressure 2. What is the shape of the diffuser in the centrifugal pump? a) Round b) … Read more
This set of Hydraulic Machines Questions and Answers for Campus interviews focuses on “Net Positive Suction Head – NPSH”. 1. In hydraulic head, NPSH is used for the analysis of __________ a) Adiabatic expansion b) Priming c) Wear d) Cavitation 2. NPSH is the difference between _______ a) Suction pressure and vapour pressure b) Vapour … Read more
This set of Hydraulic Machines Multiple Choice Questions & Answers (MCQs) focuses on “Priming Centrifugal Pumps”. 1. When a pump casing is filled with liquid before it is started, it is called as _________ a) Adiabatic expansion b) Priming c) Adiabatic compression d) Isentropic expansion 2. The pump will become incapable of pumping in case … Read more
This set of Hydraulic Machines Multiple Choice Questions & Answers (MCQs) focuses on “Specific Speed Centrifugal Pumps”. 1. The energy usage of a pump is determined by _______ a) Adiabatic expansion b) Power required c) Adiabatic compression d) Isentropic expansion 2. For an oil field to have solid control, it needs _______ a) Draft tubes … Read more
This set of Hydraulic Machines Multiple Choice Questions & Answers focuses on “Multistage Centrifugal Pumps for High Discharge”. 1. The mechanical energy can be measured by ______ a) Adiabatic expansion b) Isentropic compression c) Adiabatic compression d) Isentropic expansion 2. How many impellers does a multistage centrifugal pump have? a) Zero b) One c) Exactly … Read more
This set of Hydraulic Machines Multiple Choice Questions & Answers (MCQs) focuses on “Multistage Centrifugal Pumps for High Heads”. 1. A multistage centrifugal pumps has more than two _______ a) Pumps b) Impellers c) Turbines d) Magnetic pumps 2. The impeller is mounted on a ________ a) Draft tube b) Throttle bush c) Stuffing box … Read more
This set of Hydraulic Machines Questions and Answers for Aptitude test focuses on “Minimum Speed for Starting Centrifugal Pump”. 1. Vertical centrifugal pumps are also called as ________ a) Froth pumps b) Multistage pumps c) Cantilever pumps d) Magnetic pumps 2. Vertical pump uses _______ a) Draft tube b) Throttle bush c) Stuffing box d) … Read more
