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Objective Questions

Latest IOCL Pipeline Technical Attendant Exam Question (Objective Questions), MCQ in English

Subjects : General Science, Electrical, General Aptitude, Reasoning, General English, General Knowledge

Question Bank IOCL Pipeline Technical Attendant (Electrical) Exam - English
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General Science

Question 1Single Answer
Temperature can be expressed as derived quantity in terms of
  1. A
    length and mass
  2. B
    mass and time
  3. C
    length, mass and time
  4. D
    None of these
Question 2Single Answer
Electron volt is a unit of
  1. A
    potential difference
  2. B
    charge
  3. C
    energy
  4. D
    capacity
Question 3Single Answer
Dimensions of impulse are
  1. A
    [MLT –1]
  2. B
    [MLT²]
  3. C
    [MT–2]
  4. D
    [ML–1T–3]
Question 4Single Answer
Potential is measured in
  1. A
    joule/coulomb
  2. B
    watt/coulomb
  3. C
    newton–second
  4. D
    None of these
Question 5Single Answer
One Nanometer is equal to
  1. A
    10–9m
  2. B
    10–6m
  3. C
    10–10m
  4. D
    10–3m
Question 6Single Answer
Maxwell is the unit of
  1. A
    magnetic susceptibility
  2. B
    intensity of Magnetisation
  3. C
    magnetic Flux
  4. D
    magnetic Permeability
Question 7Single Answer
Which of the following is derived physical quantity ?
  1. A
    Mass
  2. B
    Velocity
  3. C
    Length
  4. D
    Time
Question 8Single Answer
What are the units of magnetic permeability ?
  1. A
    Wb A–1 m–1
  2. B
    Wb–1 Am
  3. C
    Wb A m–1
  4. D
    Wb A–1 m
Question 9Single Answer
Which of the following is not a synthetic fibre:
  1. A
    Anygora
  2. B
    Rayon
  3. C
    Nylon
  4. D
    Polyster
Question 10Single Answer
Which one of the following is not contained in Portland cement ?
  1. A
    Ca3Al2O6
  2. B
    Ca3SiO5
  3. C
    Ca2Si­O4
  4. D
    Ca3(PO4)2
Question 11Single Answer
What is the reson for white cement to be white ?
  1. A
    It does not contain carbon
  2. B
    It does not contain silicon
  3. C
    It does not contain iron
  4. D
    It does not contain calcium
Question 12Single Answer
Which fertilizer is assimilated directly by the plant ?
  1. A
    Super phosphate
  2. B
    Nitrolim
  3. C
    Muriate of Potash
  4. D
    Humus
Question 13Single Answer
Which of the following chemicals is used in foam fire extinguishers ?
  1. A
    Aluminium sulphate
  2. B
    Copper sulphate
  3. C
    Cobalt sulphate
  4. D
    Nickel sulphate 
Question 14Single Answer
What is a mixture of potassium nitrate, powdered charcoal and sulphur called ?
  1. A
    Glass
  2. B
    Cement
  3. C
    paint
  4. D
    Gun powder
Question 15Single Answer
Which one of the following chemicals is used in beauty parlours for hair – setting ?
  1. A
    Sulphur based
  2. B
    Phosphorus based
  3. C
    Silicon based
  4. D
    Iron based 
Question 16Single Answer
Which one of the following is used as a mordant in dyeing and tanning industry ?
  1. A
    Magnesium oxide
  2. B
    Magnesium carbonate
  3. C
    Magnesium chloride
  4. D
    Magnesium sulphate
Question 17Single Answer
Which of the following contain enzymes for cellular respiration ?
  1. A
    Dictyosomes
  2. B
    Endoplasmic reticulum
  3. C
    lysosomes
  4. D
    Mitochondria
Question 18Single Answer
Which one among the following nutrients is a strctural
  1. A
    Cell membrane
  2. B
    Plasma membrane
  3. C
    Cell wall
  4. D
    Nucleus
Question 19Single Answer
Which one among the following nutrients is a structural component of the cell wall of plants ?
  1. A
    Manganese
  2. B
    Potassium
  3. C
    Phosphorus
  4. D
    Calcium
Question 20Single Answer
Which of the following groups is present in animal cells ?
  1. A
    Mitochondria, Cell membrane, Cell wall, Cytoplasm
  2. B
    Chloroplasts, Cytoplasm, Vacuole, Nucleus
  3. C
    Nucleus, Cell membrane, Mitochondria, Cytoplasm
  4. D
    Vacuole, cell membrane, Nucleus, Mitochondria
Question 21Single Answer
For which among the following is not a true fruit ?
  1. A
    Apple
  2. B
    Date
  3. C
    Grape
  4. D
    Plum
Question 22Single Answer
Which one of the following is not a constituent of cell membrane ?
  1. A
    Cholesterol
  2. B
    Glycoplids
  3. C
    Proline
  4. D
    Phospholipids
Question 23Single Answer
The replication of DNA is a pre-requisite for a eukaryotic cell to undergo division. During the cell cycle, the DNA replicates in
  1. A
    S–phase
  2. B
    G1–phase
  3. C
    G2–phase
  4. D
    M-phase
Question 24Single Answer
During which stage of mitosis does cytokinesis usually occur in animals ?
  1. A
    Phophase
  2. B
    Metaphase
  3. C
    Anaphase
  4. D
    Telophase
Question 25Single Answer
Lysosome arises from
  1. A
    endoplasmic reticulum
  2. B
    golgi apparatus
  3. C
    nucleus
  4. D
    mitochondria

Electrical

Question 26Single Answer
Resistance switching is normally resorted in case of
  1. A
    Air blast CB
  2. B
    Bulk oil CB
  3. C
    Minimum oil CB
  4. D
    All types of CB
Question 27Single Answer
By transmitting power at high voltage
  1. A
    it will give poor voltage regulation
  2. B
    it will give better voltage regulation
  3. C
    it will not effect voltage regulation
  4. D
    None of these
Question 28Single Answer
Which statement about the daily load curve is valid ?
  1. A
    The area under the curve gives the average demand
  2. B
    The ratio of the area under the curves to the total area of rectangle in which it is contained gives the load factor for the day
  3. C
    The peak of the curve gives the installed capacity of the plant
  4. D
    The area of the curves divided by the number of hours gives load factor
Question 29Single Answer
High voltage Schring bridge is used to measure
  1. A
    large capacitance without additional element
  2. B
    small capacitance without additional element
  3. C
    medium value capacitance
  4. D
    None of these
Question 30Single Answer
Draw - in - system of laying underground cables has the drawback (s) of
  1. A
    higher cost
  2. B
    reduced current carrying capacity of the cables
  3. C
    requirements of much deeper and wider trenches
  4. D
    repairs, alterations or additions difficult
  5. E
    all of the above except
Question 31Single Answer
Surge impedance of a transmission line is
  1. A
    independent of its length
  2. B
    dependent on its length
  3. C
    independent on its temperature
  4. D
    none of the above
Question 32Single Answer
If two synchronous generators connected in parallel loose synchronism, it will lead to
  1. A
    stalling of generators
  2. B
    wild fluctuations in current
  3. C
    wild fluctuations in current and voltage
  4. D
    None of these
Question 33Single Answer
A differential relay responds to
  1. A
    algebraic difference of two or more similar electrical quantities
  2. B
    vector difference of two or more similar electrical quantities
  3. C
    algebraic difference between two currents
  4. D
    algebraic difference between two voltages
Question 34Single Answer
The conductor carries more current on the surface in comparison to its core. This phenomenon is called the
  1. A
    Skin effect
  2. B
    Corona
  3. C
    Ferranti effect
  4. D
    Lenz's effect
Question 35Single Answer
A booster is connected in
  1. A
    series with the feeder
  2. B
    parallel with the feeder
  3. C
    both (a) and (b) are correct
  4. D
    none of these
Question 36Single Answer
Fuses have got advantages of
  1. A
    cheapest type of protection
  2. B
    inverse time - current characteristic
  3. C
    no maintenance
  4. D
    current limiting effect under short - circuit conditions
  5. E
    all of the above
Question 37Single Answer
The power transmitted will be maximum when
  1. A
    line reactance is high
  2. B
    corona losses are minimum
  3. C
    sending end voltage is more
  4. D
    receiving end voltage is more
Question 38Single Answer
The connected load of a consumer is 2 kW and his maximum demand is 1.5 kW. The load factor of the consumer is
  1. A
    0.75
  2. B
    0.375
  3. C
    1.33
  4. D
    None of these
Question 39Single Answer
In a transformer, the exciting current will be in phase quadrature with the impressed voltage provided
  1. A
    only the leakage impedance drop is ignored
  2. B
    only the core loss is ignored
  3. C
    both the leakage impedance drop and the core loss are ignored
  4. D
    only the no - load copper loss is ignored
Question 40Single Answer
Which of the following techniques is used for the measurements of a.c. high frequency voltages ?
  1. A
    Peak voltmeter
  2. B
    Series resistance mircro - ammeter
  3. C
    Resistance potential divider
  4. D
    All of these
Question 41Single Answer
Use of additional shunt capacitor can be made for increasing the capability of line as it
  1. A
    reduces surge impedance Z0
  2. B
    increases phase shift β
  3. C
    increase in α
  4. D
    all of the above
Question 42Single Answer
The sag of a transmission line is least affected owing to
  1. A
    weight of the conductor
  2. B
    current through the conductor
  3. C
    atmospheric temperature
  4. D
    ice deposited on the conductor
Question 43Single Answer
In case of Impulse Thermal break down of solid insulating materials, the critical electric field is proportional to
  1. A
    critical absolute temperature
  2. B
    square of critical absolute temperature
  3. C
    square of T0
  4. D
    none of these
Question 44Single Answer
The insulation of the modern EHV lines is designed based on
  1. A
    corona
  2. B
    switching voltages
  3. C
    lightning voltage
  4. D
    all of these
Question 45Single Answer
For constant voltage transmission, the voltage drop along the line is maintained constant by installing
  1. A
    capacitors
  2. B
    inductors
  3. C
    resistors
  4. D
    synchronous phase modifiers at the receiving end
Question 46Single Answer
AC network analyser is employed for solving the problems of
  1. A
    load flow
  2. B
    load flow and stability
  3. C
    load flow and short - circuit
  4. D
    load flow, stability and short - circuit
Question 47Single Answer
The change in excitation in an alternator connected to an infinite line provides a corresponding change in
  1. A
    terminal voltage
  2. B
    speed of rotor
  3. C
    power generated
  4. D
    power factor
Question 48Single Answer
Different types of insulators used for transmission lines are
  1. A
    pin type only
  2. B
    suspension type only
  3. C
    strain type only
  4. D
    pin type, suspension type and shackle type
Question 49Single Answer
The conductor connecting consumer's terminals to the distributor is called the
  1. A
    feeder
  2. B
    distributor
  3. C
    service main
  4. D
    none of the above
Question 50Single Answer
Which of the following method or techniques can be used for the measurement of high d.c. voltages ?
  1. A
    Generating voltmeter
  2. B
    Electrostatic voltmeter
  3. C
    Peak voltmeter
  4. D
    Half effect generators
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