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Elements_01
50問 • 1年前
  • Jacky Shane Luyas Buhia
    • 通報

    問題一覧

  • 1

    In a four stroke Diesel engine, drawing air into the cylinder is what stroke ?

    a. First Stroke

  • 2

    Increasing the total amount of changing air in the working cylinder of the engine.

    b. Supercharging

  • 3

    Rings located in the grooves of the piston usually near the top and near the bottom

    b. Piston Ring

  • 4

    The portion of the piston which extends below the piston pin and serves as a guide for the piston and connecting rod.

    a. Piston Skirt

  • 5

    An engine in which the fuel is burned directly within the working cylinder.

    a. Internal Combustion Engine

  • 6

    What type of gas turbine is used in aircraft?

    a. Open cycle type

  • 7

    Which of the following compressors is generally used for gas turbines ?

    c. Axial Flow Type

  • 8

    Overall efficiency of a gas turbine is _______.

    c. Less than Diesel efficiency

  • 9

    Which curve represents the average of daily load curves over a one-month period and is used for rate establishment?

    c. Monthly Load Curve

  • 10

    What is the " Maximum Demand " often referred to as ?

    b. Peak Load

  • 11

    What is the purpose of a Load-Duration Curve ?

    b. To rearrange data from a chronological load curve

  • 12

    What does " Demand Factor " measure ?

    a. The ratio of connected load to maximum demand

  • 13

    What is the " Diversity Factor " in electrical systems ?

    c. The ratio of individual maximum demands to simultaneous maximum demand.

  • 14

    What is " Base Load " in the context of electrical systems ?

    b. The minimum load over a given period

  • 15

    A simultaneous generation of electricity and steam (or heat) in a single power plant:

    D. Cogeneration

  • 16

    What is the clockwork-operated device which records continuously the humidity of the atmosphere?

    D. Hygrograph

  • 17

    A Francis turbine has what flow:

    A. Inward flow reaction

  • 18

    A type of water turbine:

    C. Pelton

  • 19

    If the pressure of the confined gas is constant, the volume is directly proportional to the absolute temperature:

    B. Joule

  • 20

    Pump used to increase air pressure above normal, air is then used as a motive power:

    B. Air compressor

  • 21

    The locus of elevations:

    B. Hydraulic gradient

  • 22

    The dividing point between the high pressure and low pressure sides of the refrigeration cycle occurs at the:

    A. Expansion valve

  • 23

    Type of turbine that has high pressure and low pressure is called:

    D. Compound turbine

  • 24

    Heat exchanger used to provide heat transfer between the exhaust gases and the air prior to its entrance to the combustor.

    C. Regenerator

  • 25

    S.I unit of force:

    B. Newton

  • 26

    Heat transfer due to density differential:

    A. Convection

  • 27

    If the fluid travels parallel to the adjacent layers and paths of individual particles do not cross, the flow is said to be:

    D. Laminar

  • 28

    At any instant, the number of particles passing every cross-section of the stream is the same, the flow is said to be:

    A. Steady flow

  • 29

    The intake pipe to a hydraulic turbine from a dam is:

    D. Penstock

  • 30

    Scavenging efficiency of a four stroke diesel engine is:

    D. Between 95 % and 100 %

  • 31

    Flash point of liquids is the temperature at which:

    A. The fuel emits vapors at a rate which produces an inflammable mixture with air

  • 32

    Flash point for diesel fuel oil should be:

    A. Maximum 49°C

  • 33

    Air standard efficiency of a diesel engine depends on:

    B. Compression ratio

  • 34

    What amount of air is required in a low bypass factor?

    B. Lesser

  • 35

    The term "exposure" in radiological effects is used as a measure of a Gamma ray or an X-ray field in the surface of an exposed object. Since this radiation produces ionization of the air surrounding the object, the exposure is obtained as:

    A. x = no. of ions produced per mass of air x per coulombs per kg

  • 36

    The design of an air supply duct of an air conditioning system:

    D. Affects the distribution of air

  • 37

    The energy of fluid flowing at any section in a pipeline is a function of:

    C. Height above a chosen datum, density, internal energy, pressure and velocity od flow

  • 38

    Ignition of the air fuel mixture in the intake of the exhaust manifold:

    B. Backfire

  • 39

    A theoretical body which when heated to incandescence would emit a continuous light-ray spectrum:

    B. Black body

  • 40

    The ratio of the average load to the peak load over a designated period of time is called:

    A. Load factor

  • 41

    The ratio of the sum of individual maximum demands of the system to the overall maximum demand of the whole system:

    A. Demand factor

  • 42

    Heavy water is:

    D. D₂O

  • 43

    The hydraulic formula CA is use to find:

    A. Quantity of discharge through an orifice

  • 44

    If the temperature is held constant and the pressure is increased beyond the saturation pressure, we have a:

    C. Compressed liquid

  • 45

    Which of the following a set of standard condition:

    B. 101.325, 273⁰k, 22.4 m³/kg mole

  • 46

    In sensible cooling process, the moisture content:

    A. Does not change

  • 47

    The internal combustion engines never work on________ cycle:

    A. Rankine

  • 48

    The locus of elevation to which water will rise in the piezometer tube is termed:

    C. Hydraulic gradient

  • 49

    When four events takes place in one revolution of a crankshaft of an engine, the engine is called:

    C. Two stroke engine

  • 50

    Which of the following does not belong to the group?

    C. Time injection system

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    問題一覧

  • 1

    In a four stroke Diesel engine, drawing air into the cylinder is what stroke ?

    a. First Stroke

  • 2

    Increasing the total amount of changing air in the working cylinder of the engine.

    b. Supercharging

  • 3

    Rings located in the grooves of the piston usually near the top and near the bottom

    b. Piston Ring

  • 4

    The portion of the piston which extends below the piston pin and serves as a guide for the piston and connecting rod.

    a. Piston Skirt

  • 5

    An engine in which the fuel is burned directly within the working cylinder.

    a. Internal Combustion Engine

  • 6

    What type of gas turbine is used in aircraft?

    a. Open cycle type

  • 7

    Which of the following compressors is generally used for gas turbines ?

    c. Axial Flow Type

  • 8

    Overall efficiency of a gas turbine is _______.

    c. Less than Diesel efficiency

  • 9

    Which curve represents the average of daily load curves over a one-month period and is used for rate establishment?

    c. Monthly Load Curve

  • 10

    What is the " Maximum Demand " often referred to as ?

    b. Peak Load

  • 11

    What is the purpose of a Load-Duration Curve ?

    b. To rearrange data from a chronological load curve

  • 12

    What does " Demand Factor " measure ?

    a. The ratio of connected load to maximum demand

  • 13

    What is the " Diversity Factor " in electrical systems ?

    c. The ratio of individual maximum demands to simultaneous maximum demand.

  • 14

    What is " Base Load " in the context of electrical systems ?

    b. The minimum load over a given period

  • 15

    A simultaneous generation of electricity and steam (or heat) in a single power plant:

    D. Cogeneration

  • 16

    What is the clockwork-operated device which records continuously the humidity of the atmosphere?

    D. Hygrograph

  • 17

    A Francis turbine has what flow:

    A. Inward flow reaction

  • 18

    A type of water turbine:

    C. Pelton

  • 19

    If the pressure of the confined gas is constant, the volume is directly proportional to the absolute temperature:

    B. Joule

  • 20

    Pump used to increase air pressure above normal, air is then used as a motive power:

    B. Air compressor

  • 21

    The locus of elevations:

    B. Hydraulic gradient

  • 22

    The dividing point between the high pressure and low pressure sides of the refrigeration cycle occurs at the:

    A. Expansion valve

  • 23

    Type of turbine that has high pressure and low pressure is called:

    D. Compound turbine

  • 24

    Heat exchanger used to provide heat transfer between the exhaust gases and the air prior to its entrance to the combustor.

    C. Regenerator

  • 25

    S.I unit of force:

    B. Newton

  • 26

    Heat transfer due to density differential:

    A. Convection

  • 27

    If the fluid travels parallel to the adjacent layers and paths of individual particles do not cross, the flow is said to be:

    D. Laminar

  • 28

    At any instant, the number of particles passing every cross-section of the stream is the same, the flow is said to be:

    A. Steady flow

  • 29

    The intake pipe to a hydraulic turbine from a dam is:

    D. Penstock

  • 30

    Scavenging efficiency of a four stroke diesel engine is:

    D. Between 95 % and 100 %

  • 31

    Flash point of liquids is the temperature at which:

    A. The fuel emits vapors at a rate which produces an inflammable mixture with air

  • 32

    Flash point for diesel fuel oil should be:

    A. Maximum 49°C

  • 33

    Air standard efficiency of a diesel engine depends on:

    B. Compression ratio

  • 34

    What amount of air is required in a low bypass factor?

    B. Lesser

  • 35

    The term "exposure" in radiological effects is used as a measure of a Gamma ray or an X-ray field in the surface of an exposed object. Since this radiation produces ionization of the air surrounding the object, the exposure is obtained as:

    A. x = no. of ions produced per mass of air x per coulombs per kg

  • 36

    The design of an air supply duct of an air conditioning system:

    D. Affects the distribution of air

  • 37

    The energy of fluid flowing at any section in a pipeline is a function of:

    C. Height above a chosen datum, density, internal energy, pressure and velocity od flow

  • 38

    Ignition of the air fuel mixture in the intake of the exhaust manifold:

    B. Backfire

  • 39

    A theoretical body which when heated to incandescence would emit a continuous light-ray spectrum:

    B. Black body

  • 40

    The ratio of the average load to the peak load over a designated period of time is called:

    A. Load factor

  • 41

    The ratio of the sum of individual maximum demands of the system to the overall maximum demand of the whole system:

    A. Demand factor

  • 42

    Heavy water is:

    D. D₂O

  • 43

    The hydraulic formula CA is use to find:

    A. Quantity of discharge through an orifice

  • 44

    If the temperature is held constant and the pressure is increased beyond the saturation pressure, we have a:

    C. Compressed liquid

  • 45

    Which of the following a set of standard condition:

    B. 101.325, 273⁰k, 22.4 m³/kg mole

  • 46

    In sensible cooling process, the moisture content:

    A. Does not change

  • 47

    The internal combustion engines never work on________ cycle:

    A. Rankine

  • 48

    The locus of elevation to which water will rise in the piezometer tube is termed:

    C. Hydraulic gradient

  • 49

    When four events takes place in one revolution of a crankshaft of an engine, the engine is called:

    C. Two stroke engine

  • 50

    Which of the following does not belong to the group?

    C. Time injection system