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Latest BRO MSW DES Exam Question (Objective Questions), MCQ in English

Subjects : Concerned Subject MSW (Driver Engine Static)

Question Bank BRO MSW (DES) Exam - English
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Concerned Subject MSW (Driver Engine Static)

Question 1Single Answer
The working cycle of a diesel engine is completed in how many strokes?
  1. A
    Four
  2. B
    Two
  3. C
    Six
  4. D
    Eight
Question 2Single Answer
The function of the fuel injector in a diesel engine is?
  1. A
    Mix air and fuel
  2. B
    Supply air
  3. C
    Remove exhaust gases
  4. D
    Atomize and spray fuel into the cylinder
Question 3Single Answer
The compression ratio of a diesel engine is generally?
  1. A
    14:1 to 22:1
  2. B
    8:1 to 12:1
  3. C
    6:1 to 10:1
  4. D
    4:1 to 8:1
Question 4Single Answer
Which component controls engine speed in a diesel generator set?
  1. A
    Crankshaft
  2. B
    Flywheel
  3. C
    Governor
  4. D
    Piston
Question 5Single Answer
What is the main purpose of a flywheel in an engine?
  1. A
    Cooling
  2. B
    Ignition
  3. C
    Air filtration
  4. D
    Maintain uniform speed
Question 6Single Answer
Which of the following is used to start a large diesel engine?
  1. A
    Air starter
  2. B
    Electric starter motor
  3. C
    Manual crank
  4. D
    Push start
Question 7Single Answer
The diesel fuel is injected into which part of the engine?
  1. A
    Inlet manifold
  2. B
    Crankcase
  3. C
    Combustion chamber
  4. D
    Exhaust port
Question 8Single Answer
What is the function of the lubricating system in an engine?
  1. A
    Reducing friction
  2. B
    Cooling
  3. C
    Increasing compression
  4. D
    Speed control
Question 9Single Answer
The air filter in a diesel engine removes?
  1. A
    Dust and impurities
  2. B
    Water vapor
  3. C
    Exhaust gases
  4. D
    Fuel vapors
Question 10Single Answer
The alternator in a generator set converts?
  1. A
    Electrical to mechanical energy
  2. B
    AC to DC
  3. C
    Heat to light
  4. D
    Mechanical to electrical energy
Question 11Single Answer
The fuel used in a diesel generator is?
  1. A
    Diesel
  2. B
    Petrol
  3. C
    Kerosene
  4. D
    LPG
Question 12Single Answer
Which part helps to start the engine in cold conditions?
  1. A
    Glow plug
  2. B
    Thermostat
  3. C
    Spark plug
  4. D
    Governor
Question 13Single Answer
The main cause of engine knocking is?
  1. A
    All of the above
  2. B
    Late injection
  3. C
    Poor fuel quality
  4. D
    Early injection
Question 14Single Answer
The cooling system in diesel engines prevents?
  1. A
    Air blockage
  2. B
    Fuel leakage
  3. C
    Low compression
  4. D
    Overheating
Question 15Single Answer
The purpose of the silencer in an exhaust system is?
  1. A
    Reduce noise
  2. B
    Increase power
  3. C
    Improve mileage
  4. D
    Cool exhaust gases
Question 16Single Answer
What type of current is produced by an alternator?
  1. A
    AC
  2. B
    DC
  3. C
    Pulsating DC
  4. D
    Both AC and DC
Question 17Single Answer
The concrete mixer’s drum rotates because of?
  1. A
    Electrical drive motor
  2. B
    Hydraulic pump
  3. C
    Any of the above depending on type
  4. D
    Belt drive
Question 18Single Answer
The compression ignition in diesel engines occurs due to?
  1. A
    Spark
  2. B
    Cooling system
  3. C
    Injector timing
  4. D
    High pressure and temperature
Question 19Single Answer
Which instrument shows generator output voltage?
  1. A
    Voltmeter
  2. B
    Ammeter
  3. C
    Tachometer
  4. D
    Wattmeter
Question 20Single Answer
The part that stores rotational energy in an engine is?
  1. A
    Camshaft
  2. B
    Crankshaft
  3. C
    Flywheel
  4. D
    Piston
Question 21Single Answer
The load on a generator set should be applied?
  1. A
    After engine warms up
  2. B
    Immediately after start
  3. C
    Before start
  4. D
    During cranking
Question 22Single Answer
Which part opens and closes to allow air and exhaust gases in and out?
  1. A
    Valve
  2. B
    Piston
  3. C
    Crankshaft
  4. D
    Camshaft
Question 23Single Answer
The function of the governor is to?
  1. A
    Start engine
  2. B
    Reduce noise
  3. C
    Control speed
  4. D
    Clean air
Question 24Single Answer
The fuel pump delivers fuel under?
  1. A
    Atmospheric pressure
  2. B
    Low pressure
  3. C
    Medium pressure
  4. D
    High pressure
Question 25Single Answer
The oil pressure gauge indicates?
  1. A
    Oil quantity
  2. B
    Oil pressure in lubrication system
  3. C
    Oil temperature
  4. D
    Oil level
Question 26Single Answer
What is the main precaution while filling diesel fuel?
  1. A
    Engine should be running
  2. B
    Use water to clean
  3. C
    Engine should be stopped
  4. D
    Overfill tank
Question 27Single Answer
PPE used while operating generator includes?
  1. A
    Gloves
  2. B
    All of the above
  3. C
    Ear protection
  4. D
    Safety shoes
Question 28Single Answer
The function of the radiator is to?
  1. A
    Store fuel
  2. B
    Filter air
  3. C
    Cool the engine
  4. D
    Increase compression
Question 29Single Answer
The alternator is driven by?
  1. A
    Battery
  2. B
    Fan belt
  3. C
    Engine crankshaft
  4. D
    Electric motor
Question 30Single Answer
Concrete mixing time is generally?
  1. A
    30 seconds
  2. B
    90 seconds
  3. C
    60 seconds
  4. D
    120 seconds
Question 31Single Answer
The generator frequency depends on?
  1. A
    Load
  2. B
    Speed and number of poles
  3. C
    Voltage
  4. D
    Temperature
Question 32Single Answer
What is the color of diesel fuel commonly used?
  1. A
    Red
  2. B
    Transparent
  3. C
    Blue
  4. D
    Yellowish
Question 33Single Answer
A properly grounded generator prevents?
  1. A
    Overheating
  2. B
    Electric shock
  3. C
    Fuel leakage
  4. D
    Engine wear
Question 34Single Answer
The starting battery for a generator should be charged at?
  1. A
    Both b and c depending on model
  2. B
    12V
  3. C
    24V
  4. D
    6V
Question 35Single Answer
What should be done before shutting down a generator set?
  1. A
    Remove load and let engine idle
  2. B
    Apply full load
  3. C
    Increase speed
  4. D
    Stop fuel supply immediately
Question 36Single Answer
The exhaust valve opens during?
  1. A
    Power stroke
  2. B
    Exhaust stroke
  3. C
    Compression stroke
  4. D
    Intake stroke
Question 37Single Answer
What is the function of a crankshaft?
  1. A
    Pumps fuel
  2. B
    Stores energy
  3. C
    Ignites mixture
  4. D
    Converts reciprocating motion to rotary motion
Question 38Single Answer
In a diesel generator, oil level is checked using?
  1. A
    Dipstick
  2. B
    Thermometer
  3. C
    Gauge glass
  4. D
    Flow meter
Question 39Single Answer
What causes black smoke in diesel engine exhaust?
  1. A
    Low temperature
  2. B
    Too much air
  3. C
    Poor lubrication
  4. D
    Incomplete combustion
Question 40Single Answer
The output terminal of a generator is connected to?
  1. A
    Control panel
  2. B
    Fuel tank
  3. C
    Radiator
  4. D
    Governor
Question 41Single Answer
Concrete mixer blades are designed to?
  1. A
    Lift and tumble the mix uniformly
  2. B
    Stir water only
  3. C
    Grind stones
  4. D
    Control speed
Question 42Single Answer
The term “prime mover” in a generator refers to?
  1. A
    Control switch
  2. B
    Engine driving the alternator
  3. C
    Fuel system
  4. D
    Battery
Question 43Single Answer
Diesel engine power is measured in?
  1. A
    Volts
  2. B
    Watts
  3. C
    Amperes
  4. D
    Horsepower or kilowatts
Question 44Single Answer
The engine crankcase contains?
  1. A
    Oil
  2. B
    Water
  3. C
    Fuel
  4. D
    Air
Question 45Single Answer
The speed of a generator is usually?
  1. A
    300 rpm
  2. B
    100 rpm
  3. C
    5000 rpm
  4. D
    1500 rpm or 3000 rpm
Question 46Single Answer
Concrete mixer safety precaution includes?
  1. A
    Keeping hands away from moving parts
  2. B
    Cleaning while drum rotates
  3. C
    Wearing loose clothes
  4. D
    Overloading drum
Question 47Single Answer
What causes low oil pressure in an engine?
  1. A
    High oil level
  2. B
    Cold engine
  3. C
    Clean filter
  4. D
    Worn bearings
Question 48Single Answer
When starting a diesel engine, the throttle should be?
  1. A
    Fully open
  2. B
    Partly open
  3. C
    Fully closed
  4. D
    Not used
Question 49Single Answer
Overloading a generator set leads to?
  1. A
    Stable operation
  2. B
    Overheating and damage
  3. C
    Reduced fuel consumption
  4. D
    Increased voltage
Question 50Single Answer
The safety switch on generator set prevents?
  1. A
    Noise
  2. B
    Fuel mixing
  3. C
    Vibration
  4. D
    Overload and short circuit
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