Hello Dear GTU Students, Here we provide MCQ test For your upcoming Final Year Exam 2020. Today we provide test for Power Quality and Management Subject of Electrical Engineering Department. Today we cover MCQ for Chapter 4: Harmonics. This MCQ test is very useful for your upcoming final year exam.
Chapter 4: Harmonics (PQM) (Electrical Engineering)
When analyzing a nonsinusoidal waveform, it is often important to know the ______ of the harmonic components present.
A. Magnitude and Phase angle
B. Phase angle only
C. Magnitude only
D. None of above
Due to Harmonics in Transformer which of the following losses increases?
A. Eddy Current Loss only
B. Hysteresis Loss only
C. Both Hysteresis loss and eddy current loss
D. None of above
Harmonic currents are generated at load distortion level by
D. All the above
When one or more harmonic components are added to the fundamental frequency, a non distorted (nonsinusoidal) waveform is produced.
Harmonic distortion is produced by
A. Linear Load
B. Non Linear Load
C. A & B
Harmonic indices are used to measure harmonic content of a
Harmonic problem combined with _________ power factor.
Non linear loads are classified into ___ groups.
An single electronic ballast can drive up to ____ fluorescent lamp.
Passive filter is used to control _____.
Ballast is ______ limiting device.
Passive Filter should be placed on a
A Series passive filter is connected in ____ with the load.
A Low pass filter is used to block ____ harmonic frequencies.
C. 3rd Order
____ is the ratio between the RMS value of the harmonics and the RMS value of the Fundamental.
A. Total Harmonic Distoration (THD)
B. Individual Harmonic Distoration (IHD)
C. none of above
Harmonics in the system can _______.
A. Make relay malfunction
B. Increase Noise in Machine
C. Increase losses in capacitors and transformers
D. all of above
Symmetrical waveforms will contain only __ numbered harmonics.
A. Odd and Even both
B. Neither odd and even
C. Even only
D. Odd only
Because of the harmonics, conductor resistance will _____.
Harmonics can be eliminated by introducing which of the following:
A. High Impedance
C. Low impedance path
D. Resonant circuit
Which of the following device is not the source of harmonics?
A. Pure resistive loads
B. Arcing devices
D. Ferromagnetic devices