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Objective Questions

Latest SAIL Management Trainee Exam Question (Objective Questions), MCQ in English

Subjects : Mechanical Engineering, Quantitative Aptitude, Reasoning, Verbal Ability, General Awareness

Question Bank SAIL Management Trainee Exam (Mechanical Engineering) - English
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Mechanical Engineering

Question 1Single Answer
If a submerged body displaced from its equilibrium position, returns to its original position, it is called __________.
  1. A
    thermal equilibrium
  2. B
    neutral equilibrium
  3. C
    unstable equilibrium
  4. D
    stable equilibrium
Question 2Single Answer
In a flow measurement, a venturi meter is preferred over an orifice plate because _____.
  1. A
    energy of head loss is less
  2. B
    It is cheaper
  3. C
    pressure drop is more
  4. D
    space is limited  
Question 3Single Answer
Pitot tube measures ______.
  1. A
    dynamic pressure of a moving stream
  2. B
    guage pressure
  3. C
    temperature of moving water
  4. D
    pressure difference between two fluids
Question 4Single Answer
Which of the following is not a property of an ideal fluid ?
  1. A
    flow is irrotational
  2. B
    it has no viscosity
  3. C
    it has viscosity
  4. D
    it is incompressible
Question 5Single Answer
Nozzle used in steam turbines convert ________.
  1. A
    enthalpy of steam into work
  2. B
    enthalpy of steam into kinetic energy
  3. C
    enthalpy of steam into pressure energy
  4. D
    pressure energy into work
Question 6Single Answer
Which of the following assumptions is the most relevant in air-standard cycle analysis ?
  1. A
    All the processes within the cycle are irreversible
  2. B
    Working fluid is a fixed mass
  3. C
    Specific heat of air changes during the cycle
  4. D
    Cycle is assumed to be an open cycle
Question 7Single Answer
The modern Francis turbine is a ___________flow turbine .
  1. A
    tangential 
  2. B
    axial
  3. C
    radial
  4. D
    mixed
Question 8Single Answer
Variation of stress with strain rate for a Newtonian fluid is ______ .
  1. A
    hyperbolic
  2. B
    linear
  3. C
    elliptical
  4. D
    parabolic
Question 9Single Answer
Which of the following is NOT a part of refrigeration systems ?
  1. A
    Turbine
  2. B
    Evaporator
  3. C
    Compressor
  4. D
    Condenser
Question 10Single Answer
Which of the following is NOT an intensive property ?
  1. A
    Temperature
  2. B
    Total volume
  3. C
    Pressure
  4. D
    Density
Question 11Single Answer
Which of the following does NOT represent a unit of viscosity ?
  1. A
    Stoke
  2. B
    Poise
  3. C
    m²/sec
  4. D
    N-m/sec
Question 12Single Answer
__________ in the fuel is oxidised during knocking .
  1. A
    Hydrocarbon
  2. B
    Phosphorous
  3. C
    Water
  4. D
    Coal
Question 13Single Answer
_________ is defined as the ability of a material to resist deformation under action of an external load .
  1. A
    Stiffness
  2. B
    Resilience
  3. C
    Brittleness
  4. D
    Toughness
Question 14Single Answer
Draught is produced in locomotive boilers by which of the following components ?
  1. A
    Locomotive
  2. B
    Steam jet
  3. C
    Centrifugal fan
  4. D
    Chimney
Question 15Single Answer
For a steady flow, the value of all fluid properties at any fixed point _________ .
  1. A
    do not change with location
  2. B
    change with time
  3. C
    change with location
  4. D
    do not change with time
Question 16Single Answer
For a floating body, if the metacentre is below the centre of gravity, then the body is said to be __________ equilibrium .
  1. A
    thermal 
  2. B
    stable 
  3. C
    unstable
  4. D
    neutral
Question 17Single Answer
________ is useful for measuring flow of a conducting fluid .
  1. A
    Orifice meter
  2. B
    Rotameter
  3. C
    Vane meter
  4. D
    Electro-magnetic flow meter
Question 18Single Answer
A two- stroke engine consists of ________ port (s)
  1. A
    Three
  2. B
    Four
  3. C
    One
  4. D
    Two
Question 19Single Answer
Air Cooling is mostly preferred for _________ .
  1. A
    heavy truck
  2. B
    buses
  3. C
    moto cycles
  4. D
    multi-utility vehicles
Question 20Single Answer
_______ valves are provided in reciprocating compressors .
  1. A
    Simply supported
  2. B
    Solenoid
  3. C
    Plate
  4. D
    Poppet
Question 21Single Answer
Benson boiler have ______ water drum (s)
  1. A
    One
  2. B
    Zero
  3. C
    Three
  4. D
    Two
Question 22Single Answer
_________ is used for pumping water into a boilers .
  1. A
    Economiser
  2. B
    Duplex pump
  3. C
    Feed pump
  4. D
    Rotor
Question 23Single Answer
The function of a carburetor in internal combustion engines is :
  1. A
    to control fuel alone
  2. B
    to cool exhaust gases
  3. C
    to maintain air-fuel ratio
  4. D
    to control air alone
Question 24Single Answer
The device which transfers energy from the ______ to _____ the is known as hydraulic turbine .
  1. A
    atmosphere; fluid  
  2. B
      rotor; fluid
  3. C
    fluid; rotor
  4. D
    fluid; atmosphere
Question 25Single Answer
The flash chamber in the single stage VCR cycle serves to ________ .
  1. A
    decrease the compression ratio
  2. B
    increase the refrigerating effect
  3. C
    increase the compression ratio
  4. D
    decrease the refrigerating effect
Question 26Single Answer
What is the least count of a Vernier caliper having 20 Vernier scale divisions coinciding with 19 main scale divisions, where 1 main scale division is 1 mm?
  1. A
    0.01 mm
  2. B
    0.05 mm
  3. C
    0.1 mm
  4. D
    0.02 mm
Question 27Single Answer
Which part of a Vernier caliper is used for measuring the depth of a hole?
  1. A
    Main scale
  2. B
    Vernier scale
  3. C
    Jaws
  4. D
    Depth bar
Question 28Single Answer
What is the principle of measurement in a micrometer?
  1. A
    Difference in scale divisions
  2. B
    Screw and nut mechanism
  3. C
    Comparison with a standard
  4. D
    Optical magnification
Question 29Single Answer
What is the least count of a standard metric micrometer?
  1. A
    0.1 mm
  2. B
    0.02 mm
  3. C
    0.01 mm
  4. D
    0.05 mm
Question 30Single Answer
The spindle of a micrometer is attached to which part?
  1. A
    Anvil
  2. B
    Frame
  3. C
    Thimble
  4. D
    Sleeve
Question 31Single Answer
What is the purpose of the ratchet stop in a micrometer?
  1. A
    To lock the measurement
  2. B
    To provide a constant measuring pressure
  3. C
    To rotate the spindle quickly
  4. D
    To ensure uniform measuring pressure
Question 32Single Answer
A wire gauge is used to measure the:
  1. A
    Length of a wire
  2. B
    Resistance of a wire
  3. C
    Diameter of a wire
  4. D
    Current carrying capacity of a wire
Question 33Single Answer
Wire gauges typically measure wire diameter in:
  1. A
    Millimeters
  2. B
    Inches
  3. C
    Standard gauge numbers
  4. D
    Micrometers
Question 34Single Answer
What are slip gauges also known as?
  1. A
    Feeler gauges
  2. B
    Gauge blocks
  3. C
    Radius gauges
  4. D
    Thread gauges
Question 35Single Answer
Slip gauges are made of:
  1. A
    Soft steel
  2. B
    Aluminum
  3. C
    Hardened and ground high-grade steel alloy
  4. D
    Brass
Question 36Single Answer
What is the process of joining slip gauges together for a specific dimension called?
  1. A
    Welding
  2. B
    Soldering
  3. C
    Wringing
  4. D
    Clamping
Question 37Single Answer
The accuracy of slip gauges is typically expressed in terms of:
  1. A
    Surface finish
  2. B
    Hardness
  3. C
    Grade
  4. D
    Weight
Question 38Single Answer
Which of the following measuring instruments has the highest accuracy?
  1. A
    Vernier caliper
  2. B
    Micrometer
  3. C
    Slip gauges
  4. D
    Wire gauge
Question 39Single Answer
What is the main scale division value of a Vernier height gauge if its least count is 0.02 mm and it has 50 Vernier divisions coinciding with 49 main scale divisions?
  1. A
    0.5 mm
  2. B
    1 mm
  3. C
    0.01 mm
  4. D
    0.02 mm
Question 40Single Answer
A feeler gauge is used to measure:
  1. A
    External diameters
  2. B
    Internal diameters
  3. C
    Gaps or clearances between mating parts
  4. D
    Thread pitch
Question 41Single Answer
Feeler gauge blades have specific:
  1. A
    Lengths
  2. B
    Widths
  3. C
    Thicknesses
  4. D
    Materials
Question 42Single Answer
What is a radius gauge used for?
  1. A
    Measuring angles
  2. B
    Measuring straightness
  3. C
    Measuring the radius of curves or fillets
  4. D
    Measuring thread radius
Question 43Single Answer
Radius gauges consist of a set of blades with:
  1. A
    Varying lengths
  2. B
    Varying widths
  3. C
    Different concave and convex radii
  4. D
    Different thicknesses
Question 44Single Answer
What is a thread pitch gauge used for?
  1. A
    Measuring the diameter of a thread
  2. B
    Measuring the length of a thread
  3. C
    Measuring the pitch of a screw thread
  4. D
    Measuring the angle of a thread
Question 45Single Answer
Thread pitch gauges consist of a set of blades with different:
  1. A
    Thread depths
  2. B
    Thread profiles and pitches
  3. C
    Thread angles
  4. D
    Thread lengths
Question 46Single Answer
Which of the following is a direct measuring instrument?
  1. A
    Dial gauge
  2. B
    Steel rule
  3. C
    Comparator
  4. D
    Sine bar
Question 47Single Answer
Which of the following is an indirect measuring instrument?
  1. A
    Micrometer
  2. B
    Vernier caliper
  3. C
    Dial gauge used with a datum surface
  4. D
    Wire gauge
Question 48Single Answer
What is the purpose of a dial gauge?
  1. A
    To measure large dimensions accurately
  2. B
    To measure small linear displacements or variations
  3. C
    To measure angles precisely
  4. D
    To measure surface roughness
Question 49Single Answer
The least count of a dial gauge is typically:
  1. A
    1 mm
  2. B
    0.1 mm
  3. C
    0.01 mm
  4. D
    0.001 mm or 0.01 mm (Commonly 0.01 mm, but some are 0.001 mm)
Question 50Single Answer
What is a comparator used for?
  1. A
    Measuring absolute dimensions
  2. B
    Comparing the dimensions of a workpiece with a standard
  3. C
    Measuring angles accurately
  4. D
    Measuring surface finish
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