BSNL TTA MCQ Part One
Category –CE Online Test
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Attempt Free BSNL TTA MCQ Part One Here. Read The Important Civil MCQ From Below.
2.ANSWER KEY-Correct answer is indicated by symbol (V) in options.
3.HINTS-In some questions options E-HINTS is indicating the hints of answer.1) Resistivity of a wire depends onA [ ]) length
B [v]) material
C [ ]) cross section area
D [ ]) none of the above
2) If 1 A current flows in a circuit, the number of electrons flowing through this circuit is
A [ ]) 1.6 × 1019
B [v]) 0.625 × 1019
C [ ]) 1.6 × 10 – 19
D [ ]) 0.625 × 10 – 19
3) The resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be
A [ ]) R Ω
B [ ]) 2R Ω
C [ ]) 4R Ω
D [v]) 8R Ω
4) How many coulombs of charge flow through a circuit carrying a current of 10 A in 1 minute?
A [ ]) 10
B [ ]) 60
C [v]) 600
D [ ]) 1200
BSNL TTA MCQ Part One
5) The unit of resistivity is
A [ ]) Ω.
B [v]) Ω – metre.
C [ ]) Ω / metre.
D [ ]) Ω / m².
6) Instantaneous power in inductor is proportional to the
A [v]) product of the instantaneous current and rate of change of current.
B [ ]) square of instantaneous current.
C [ ]) square of the rate of change of current.
D [ ]) temperature of the inductor.
7) The voltage induced in an inductor is represented as,
A [ ]) product of its inductance and current through it.
B [ ]) ratio of its inductance to current through it.
C [ ]) ratio of current through it to its inductance.
D [v]) product of its inductance and rate of change of current through it.
8) Magnetic flux has the unit of
A [ ]) Newton
B [ ]) Ampere turn
C [v]) Weber
D [ ]) Tesla
9) If P is the power of a star connected system then what will be power of an equivalent delta connected system?
A [v]) P
B [ ]) 3P
C [ ]) P/3
D [ ]) None of the above
BSNL TTA MCQ Part One
10) Which of the followings is/are active element?
A [ ]) Voltage source
B [ ]) Current source
C [v]) Both
D [ ]) None of these.
11) Which of the following are the passive elements?
A [ ]) Resistor
B [ ]) Bulb
C [v]) Both
D [ ]) None of these.
12) Power dissipation in ideal inductor is
A [ ]) Maximum
B [v]) Zero
C [ ]) Minimum
D [ ]) A finite value
BSNL TTA MCQ Part One
13) Inductor does not allow the sudden change of
A [v]) current
B [ ]) voltage
C [ ]) power
D [ ]) None of the above
14) Capacitor does not allow the sudden change of
A [ ]) current
B [v]) voltage
C [ ]) power
D [ ]) None of the above
15) Internal resistance of ideal voltage source is
A [v]) zero
B [ ]) infinite
C [ ]) finite
D [ ]) 100 ohms
BSNL TTA MCQ Part One
16) Internal resistance of ideal current source is
A [ ]) zero
B [v]) infinite
C [ ]) finite
D [ ]) 100 ohms
17) Which quantity consists of a unit KWh ?
A [v]) Energy
B [ ]) Time
C [ ]) Power
D [ ]) Charge
18) Which of the following has no units?
A [ ]) Permeability
B [ ]) Moment of a magnet
C [v]) Magnetic susceptibility
D [ ]) Permittivity
19) Which of the following quantities consists of SI unit as WATT ?
A [ ]) Force
B [ ]) Charge
C [ ]) Current
D [v]) Power
BSNL TTA MCQ Part One
20) Rms value is defined based on which of the following?
A [v]) Heating effect
B [ ]) Charge transfer
C [ ]) Current
D [ ]) Voltage
BSNL TTA MCQ Part One
