Power Quality and Management (2180911) MCQs

MCQs of Harmonics

Showing 21 to 29 out of 29 Questions
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21.
Usually, the reactance of a capacitor bank is ________________ to frequency
(a) inversely proportional
(b) linearly proportional
(c) exponentially proportional
(d) independent
Answer:

Option (a)

22.
Usually, the reactance of a inductor bank is___________________ to frequency
(a) linearly proportional
(b) inversely proportional
(c) exponentially proportional
(d) Indpendent
Answer:

Option (a)

23.
_____________ of an electrical system is a measure of the energy stored in the inductance and the capacitance of the system
(a) The form factor
(b) The power factor
(c) The quality factor
(d) The distortion factor
Answer:

Option (c)

24.
In skin effect, Skin depth (δ) is _________________ to the square root of the frequency
(a) linearly proportional
(b) independent
(c) inversely proportional
(d) exponentially proportional
Answer:

Option (c)

25.
Under the worst possible conditions, the neutral bus may be forced to carry a current equal to __________% of the phase currents.
(a) 183
(b) 123
(c) 153
(d) 173
Answer:

Option (d)

26.
Can harmonics affect the electromechanical relays?
(a) Yes
(b) No
Answer:

Option (a)

27.
In the power system the full form of PCC is
(a) Primarily Common Coupling
(b) Point of Common Coupling
(c) Point of Coupling Common
(d) Primarily Coupling Common
Answer:

Option (b)

28.
____________ filters use active conditioning to compensate for harmonic currents in a power system.
(a) Passive
(b) Tuned
(c) Damped
(d) Active
Answer:

Option (d)

29.
______________ filters can respond to changing load and harmonic conditions.
(a) Active
(b) Passive
(c) Tuned
(d) Damped
Answer:

Option (a)

Showing 21 to 29 out of 29 Questions
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