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Latest TSGENCO AE Mechanical Exam Question (Objective Questions), MCQ in English
Subjects : Mechanical, General Awareness & Numerical Ability
Question Bank TSGENCO AE Mechanical Exam - English
Mechanical
Q 1 :
If a submerged body displaced from its equilibrium position, returns to its original position, it is called __________.
A.thermal equilibrium
B.neutral equilibrium
C.unstable equilibrium
D.stable equilibrium
Q 2 :
In a flow measurement, a venturi meter is preferred over an orifice plate because _____.
A.energy of head loss is less
B.It is cheaper
C.pressure drop is more
D.space is limited
Q 3 :
Pitot tube measures ______.
A.dynamic pressure of a moving stream
B.guage pressure
C.temperature of moving water
D.pressure difference between two fluids
Q 4 :
Which of the following is not a property of an ideal fluid ?
A.flow is irrotational
B.it has no viscosity
C.it has viscosity
D.it is incompressible
Q 5 :
Nozzle used in steam turbines convert ________.
A.enthalpy of steam into work
B.enthalpy of steam into kinetic energy
C.enthalpy of steam into pressure energy
D.pressure energy into work
Q 6 :
Which of the following assumptions is the most relevant in air-standard cycle analysis ?
A.All the processes within the cycle are irreversible
B.Working fluid is a fixed mass
C.Specific heat of air changes during the cycle
D.Cycle is assumed to be an open cycle
Q 7 :
The modern Francis turbine is a ___________flow turbine .
A.tangential
B.axial
C.radial
D.mixed
Q 8 :
Variation of stress with strain rate for a Newtonian fluid is ______ .
A.hyperbolic
B.linear
C.elliptical
D.parabolic
Q 9 :
Which of the following is NOT a part of refrigeration systems ?
A.Turbine
B.Evaporator
C.Compressor
D.Condenser
Q 10 :
Which of the following is NOT an intensive property ?
A.Temperature
B.Total volume
C.Pressure
D.Density
Q 11 :
Which of the following does NOT represent a unit of viscosity ?
A.Stoke
B.Poise
C.m²/sec
D.N-m/sec
Q 12 :
__________ in the fuel is oxidised during knocking .
A.Hydrocarbon
B.Phosphorous
C.Water
D.Coal
Q 13 :
_________ is defined as the ability of a material to resist deformation under action of an external load .
A.Stiffness
B.Resilience
C.Brittleness
D.Toughness
Q 14 :
Draught is produced in locomotive boilers by which of the following components ?
A.Locomotive
B.Steam jet
C.Centrifugal fan
D.Chimney
Q 15 :
For a steady flow, the value of all fluid properties at any fixed point _________ .
A.do not change with location
B.change with time
C.change with location
D.do not change with time
Q 16 :
For a floating body, if the metacentre is below the centre of gravity, then the body is said to be __________ equilibrium .
A.thermal
B.stable
C.unstable
D.neutral
Q 17 :
________ is useful for measuring flow of a conducting fluid .
A.Orifice meter
B.Rotameter
C.Vane meter
D.Electro-magnetic flow meter
Q 18 :
A two- stroke engine consists of ________ port (s)
A.Three
B.Four
C.One
D.Two
Q 19 :
Air Cooling is mostly preferred for _________ .
A.heavy truck
B.buses
C.moto cycles
D.multi-utility vehicles
Q 20 :
_______ valves are provided in reciprocating compressors .
A.Simply supported
B.Solenoid
C.Plate
D.Poppet
Q 21 :
Benson boiler have ______ water drum (s)
A.One
B.Zero
C.Three
D.Two
Q 22 :
_________ is used for pumping water into a boilers .
A.Economiser
B.Duplex pump
C.Feed pump
D.Rotor
Q 23 :
The function of a carburetor in internal combustion engines is :
A.to control fuel alone
B.to cool exhaust gases
C.to maintain air-fuel ratio
D.to control air alone
Q 24 :
The device which transfers energy from the ______ to _____ the is known as hydraulic turbine .
A.atmosphere; fluid
B. rotor; fluid
C.fluid; rotor
D.fluid; atmosphere
Q 25 :
The flash chamber in the single stage VCR cycle serves to ________ .
A.decrease the compression ratio
B.increase the refrigerating effect
C.increase the compression ratio
D.decrease the refrigerating effect
Q 26 :
Define thermodynamics .
A.It is a science which deals with the relation between heat, work and properties of systems
B.It is a science which deals with work done
C.It deals with dynamics under thermal conditions
D.It is science which deals with the relation between work and properties
Q 27 :
Which of the following statements is correct about a Benson boiler ?
A.Air is sent through the same direction
B.There is no recirculation of water
C.Steam is sent out in multiple directions
D.Flue gases pass only in one direction
Q 28 :
Within a refrigeration system, the expansion valve is incorporated between the ________ .
A.Super-heater and sub-cooler
B.compressor and condenser
C.evaporator and compressor
D.condenser and evaporator
Q 29 :
The reversed ______ cycle employed for passenger aircraft systems .
A.Carnot
B.Atkinson
C.Ericsson
D.Brayton
Q 30 :
Fusible plug in a steam boiler is placed ______ .
A.below the water level indicator
B.at he crown of the furnace
C.at the fire grate of the boiler
D.near the manhole
Q 31 :
Aqua ammonia solution used in a vapour absorption refrigeration system is a solution of ammonia in ________ .
A.CF3
B. LiBr
C.H2O2
D.H2O
Q 32 :
Coated electrodes are used in ______ .
A.gas tungsten arc welding
B.submerged arc welding
C.tungsten insert gas welding
D.shielded metal arc welding
Q 33 :
Where is air cycle refrigeration commonly used ?
A.Domestic refrigerator
B.Cold storage
C.Aircraft conditioning
D.Car air conditioning
Q 34 :
________, is not a water tube boiler .
A.Benson boiler
B.Babcock-Wilcox boiler
C.Stirling boiler
D.Scotch marine
Q 35 :
Stoke is another unit of -
A.kinematic viscosityy
B.velocity gradient
C.Shear stress
D.dynamic viscosit
Q 36 :
For a refrigerating machine, capacity is expressed as ______ .
A.the lowest temperature attained
B.inside volume of the cabinet
C.gross weight of the machine
D.rate of heat extraction from the space being cooled
Q 37 :
The value of quality or dryness fraction of a substance in saturated liquid-vapor mixture is ________ .
A.1
B.2
C.Zero
D.between Zero and 1
Q 38 :
Uniform flow is the type of flow where in velocity at any given time ________- with respect to space .
A.Decreases
B.Does not change
C.Increases
D.Changes
Q 39 :
______ falls under the category of a water tube boiler .
A.Locomotive boiler
B.Lancashire boiler
C.Cornish boiler
D.LaMont boiler
Q 40 :
Chaplets are used in ________ .
A.forging
B.casting
C.welding
D.extrusion
Q 41 :
Which of the following is NOT a unit of pressure ?
A.Pa
B.Bar
C.N/m²
D.Joule
Q 42 :
What was the first refrigerant used in continuous refrigeration system ?
A.Ammonia
B.Water
C. Air
D.Carbon dioxide
Q 43 :
For a 2 m deep swimming pool, pressure difference between the top and the bottom of the pool is ________ kPa .
A.22
B.19.6
C.11
D.12
Q 44 :
Pressure measurement is done by ____. by measuring heat loss from a heated wire .
A. A pirani gauge
B.a manometer
C.a barometer
D.an orifice meter
Q 45 :
In the Rankine cycle, the fluid which enters the boiler is :
A.water
B.steam
C.mercury
D.oxygen
Q 46 :
Percentage elongating measured during tensile testing indicates _____ .
A.malleability
B.fatigue strength
C.creep
D.ductility
Q 47 :
For a given centrifugal pump, discharge varies _______ with speed .
A.fifth power of
B.linearly
C.inversely
D.square root of
Q 48 :
Foaming is a phenomenon that occurs in the boiler feed water due to _____ .
A.nitrogen peroxide
B.manganese
C.sodium chloride
D.oil
Q 49 :
Compounding of a steam turbine is done to ______ .
A.balance the rotor
B.reduce the rotor speed
C.reduce the blade friction
D.connect the shaft
Q 50 :
Any change in entropy could be achieved by changing______ .
A.velocity
B.heat
C.acceleration
D.mass
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