Description : A relief valve (A) Provides back pressure for a cylinder (B) Unloads a pump (C) Is a directional control valve (D) None of these
Last Answer : (C) Is a directional control valve
Description : Purpose of relief valve in a reciprocating pump is to (A) Protect the pump against developing excessive pressure (B) Facilitate unidirectional flow of liquid (C) Reduce the discharge pressure (D) Control the rate of discharge
Last Answer : (A) Protect the pump against developing excessive pressure
Description : Foot valves provided in pumps are __________ valves. (A) Relief (B) Three/four way (C) Pressure reducing (D) Directional contro
Last Answer : (D) Directional control
Description : Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the (A) Back flow of fluid in the event of stoppage of pump (B) Discharge pressure (C) Flow of liquid during operation of the pump (D) All (A), (B) and (C)
Last Answer : (A) Back flow of fluid in the event of stoppage of pump
Description : What is function of Oil reservoir,Pressure relief valve, Direction control valve and filters in Hydraulic system.
Last Answer : (i) Oil Reservoir - To store the Hydraulic oil for the circuit (ii) Pressure Relief Valve- To release the extra pressure whenever not required by system (iii) Direction Control Valve- To ... (iv) Filters- To filter the foreign particle from the oil and to separates submicron level contamination
Description : A shuttle valve will: a. Allow the accumulator to be emptied after engine shut down b. Reduce pump loading when normal system pressure is reached c. Automatically switched to a more appropriate source of hydraulic supply d. Operate on a rising pressure, higher than the Full Flow relief valve
Last Answer : c. Automatically switched to a more appropriate source of hydraulic supply
Description : Foot valves are provided in the suction line of a centrifugal pump to (A) Avoid priming, every time we start the pump (B) Remove the contaminant present in the liquid (C) Minimise the fluctuation in discharge (D) Control the liquid discharge
Last Answer : (A) Avoid priming, every time we start the pump
Description : Device to control the pressure of fluid and gases within range of settings. a. Relief valve. c. Filter b. Spray gun. d. Pressure regulator
Last Answer : Pressure regulator
Description : Check in a centrifugal pump is (A) Provided in the discharge line (B) Generally a globe valve (C) Provided to prevent liquid from backing up through the pump when the pump is turned off or accidently stops running (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : The vent valve provided in a liquid handling centrifugal pump is (A) Generally a needle valve (B) Used to release any gases that might be vapour locking the pump (C) Helpful in easy removal of samples (D) All (A), (B) and (C)
Description : A hydraulic accumulator comprises of (A) A storage device and a control valve (B) A cylinder and a plunger (C) Two pistons and two cylinders (D) A storage tank and a ram pump
Last Answer : (B) A cylinder and a plunger
Description : In the illustration, the function generators will accept only a signal of a given polarity, if negative is used for ahead and positive for astern, moving the bridge reference in the direction ... cause a speed change until the output voltage exceeds the value of the lube oil pressure override
Last Answer : Answer: C
Description : Pick out the wrong statement about cavitation. (A) Sudden reduction of pressure in a fluid flow system caused by flow separation, vortex formation or abrupt closing of valve leads to cavitation ... (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades
Last Answer : (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades
Description : When does the engine High Pressure fuel shut off valve close? a. After a booster pump failure b. When the engine fuel switch is selected ‘ON’ during engine start c. When flight idle is selected d. When the engine fuel switch is selected ‘OFF’ during engine shut-down
Last Answer : d. When the engine fuel switch is selected ‘OFF’ during engine shut-down
Description : Pressure relief valves are provided in water mains (A) To reduce the pressure (B) At low points (C) Upstream of sluice (D) All the above
Last Answer : (D) All the above
Description : What causes a water heaters relief valve to discharge water?
Last Answer : The relief valves are installed on every water heater for your safety. If the tank builds up too much pressure inside it can explode. The relief valve is there to relieve the pressure in the ... the tank exceeds this limit the pressure valve is activated and will relieve the pressure in the tank.
Description : Do all propane tanks have a relief valve?
Last Answer : Propane tanks are required to have a safety relief valve. The relief valve is a safety device on the propane tank to vent excess pressure.
Description : Do I need threaded or flanged type of vacuum relief valve?
Last Answer : You should take your current one off and see what type you have. If you can't take it off, then you should go down to your local parts store and ask them which one your vehicle takes. They have a huge database that typically lists all of the different parts that are needed.
Description : The moisture in a refrigerant is removed by (a) evaporator (b) safety relief valve (c) dehumidifier (d) driers
Last Answer : Ans: d
Description : What is relief valve?
Last Answer : Answer: Valve to relieve excess pressure in liquids in situations where full flow discharge is not required, when release of small volume of liquid would rapidly lower pressure.
Description : Component to remove suspended matter large than a predetermined size from fluid. a. Relief valve. c. Filter b. Spray gun. d. Nozzle
Last Answer : Filter
Description : Why is there a relief valve on a turbine casing?
Last Answer : The turbine casing is fitted with spring-loaded relief valves to prevent damage by excessive steam pressure at the low-pressure end if the exhaust valve is closed accidentally. Some casings on smaller ... -pressure of the exhaust end. A spring-loaded relic valve is needed to relieve high pressure.
Description : A relief valve
Last Answer : C. Relieves at a designed pressure
Description : On an engine throttle control system, the auxiliary control circuits are provided with devices to prevent excessive overtravel of the pilot valve by the synchronous motor. These devices are called _________________. A. overlap sensors B. limit switches C. overtravel relays D. proximity switches
Last Answer : Answer: B
Description : Volute type of casing is provided in a centrifugal pump to (A) Convert velocity head to pressure head (B) Convert pressure head to velocity head (C) Reduce the discharge fluctuation (D) Increase the discharge
Last Answer : (D) Increase the discharge
Description : While starting a centrifugal pump, its delivery valve should be kept (A) Opened (B) Closed (C) Either opened or closed; it does not make any difference (D) Either opened or closed; depending on the fluid viscosity
Last Answer : (B) Closed
Description : Gear pump (A) Is a positive displacement pump (B) Is a centrifugal pump (C) Is a non-positive displacement pump (D) Can be started with delivery valve closed
Last Answer : (A) Is a positive displacement pump
Description : While starting an axial flow pump, its delivery valve should be kept (A) Open (B) Closed (C) Either open or closed (D) None of these
Last Answer : (A) Open
Description : Erosion and pits formation on the impeller of a centrifugal pump may be due to (A) Cavitation (B) Low speed of impeller (C) Its operation with delivery valve closed for considerable time after starting the pump (D) Off centering of pump with motor
Last Answer : (A) Cavitation
Description : Which of the following is a boiler accessory i.e., not a boiler mounting? (A) Blow off cock (B) Feed check valve (C) Feed water pump (D) Stop valve
Last Answer : (C) Feed water pump
Description : In the illustration, moving the engine room reference in the direction indicated will _________. SE-0002 A. cause a positive signal to be sent to the ahead function generator creating a more ... the ahead valve to open until the negative signal exceeds the low lube oil pressure override signal
Last Answer : Answer: A
Description : The fastest symptomatic relief as well as highest healing rates in reflux esophagitis are obtained with: A. Prokinetic drugs B. H2 receptor blockers C. Proton pump inhibitors D. Sodium alginate
Last Answer : C. Proton pump inhibitors
Description : Which are the major controlling systems for reduction of volcanic disaster? a. Prediction for early warning of eruption b. Timely evolution and relief work c. Both a and b d. None of the above
Last Answer : c. Both a and b
Description : Morphine affords symptomatic relief of dyspnoea in acute left ventricular failure by the following mechanisms except: A. Bronchodilatation B. Depression of respiratory centre C. Reduction in cardiac preload D. Shift of blood from pulmonary to systemic circuit
Last Answer : A. Bronchodilatation
Description : Maximum Differential pressure: a. Is the maximum authorized pressure difference between the inside of the fuselage and the atmospheric ambient pressure b. Is the absolute pressure provided by the vacuum ... time limit d. Is the absolute pressure the cabin pressure ducting is designed to carry
Last Answer : a. Is the maximum authorized pressure difference between the inside of the fuselage and the atmospheric ambient pressure
Description : Maximum Differential pressure: a. Is the maximum authorized pressure difference between the inside of the fuselage and the atmospheric ambient pressure b. Is the absolute pressure provided by the ... time limit d. Is the absolute pressure the cabin pressure ducting is designed to carry
Description : Remote control valve is a __________ valve. (A) Gate (B) Butterfly (C) Needle (D) Globe
Last Answer : (B) Butterfly
Description : The valve used for very remote and accurate control of fluid is a __________ valve. (A) Needle (B) Globe (C) Gate (D) Butterfly
Last Answer : (A) Needle
Description : Check valve is used for __________ flow. (A) Very precise control of (B) Unidirectional (C) Multidirectional (D) None of these
Last Answer : (B) Unidirectional
Description : What is foot valve?
Last Answer : Answer: Valve used to maintain a head of water on the suction side of sump pump, basically a lift check valve with integrated strainer.
Description : Pick up the correct statement from the following: (A) At a particular speed of operation, the head produced decreases with the increase of discharge (B) At zero discharge, discharge valve remaining closed ... which efficiency of a pump is maximum, is known as normal discharge (D) All the above
Description : In centrifugal pump installation, (A) Pump is properly primed before starting (B) The diameter of the pipe at inlet as well as at outlet, is kept smaller than the delivery pipe (C) The ... out if it is started with empty delivery pipe and with open gate valve (D) All the above
Description : Why Does The Safety Valve On My Compressor Pump Make A "popping" Sound?
Last Answer : This is most commonly an indication of bad valves. Depending on the model valves could be rebuilt or replaced.
Description : The division of Bengal Agreement 1905 by British Viceroy in India Lord Curzon that provided some relief to Muslims of East Bengal was cancelled due to strong Indian Nationalist opposition in: A. 1857 B. 1870 C. 1911 D. 1920
Last Answer : ANSWER: C
Description : Air vessel provided in a reciprocating pump is for (A) Increasing the acceleration head (B) Making the friction in pipe uniform (C) Decreasing the acceleration head (D) None of these
Last Answer : (B) Making the friction in pipe uniform