A. create more electrical noise
B. are likely to melt under excessive eddy current heat
C. consume more power
D. exhibit unwanted inductive and capacitive effects
Related Mcqs:
- At very low frequencies a series R-C circuit behaves as almost purely___________?
A. resistive
B. inductive
C. capacitive
D. none of the above - At _______ frequencies the parallel R-L circuit behaves as purely resistive
A. low
B. very low
C. high
D. very high - Skin effect occurs when a conductor carries current at_______ frequencies
A. very low
B. low
C. medium
D. high - Which of the following statements pertains to resistors only _____________?
A. can dissipate considerable amount of power
B. can act as energy storage devices
C. connecting them in parallel in¬creases the total value
D. oppose sudden changes in voltage - The period of a sine wave is _____ seconds. Its frequency is
A. 20 Hz
B. 30 Hz
C. 40 Hz
D. 50 Hz - The r.m.s. value and mean value is the same in the case of___________?
A. triangular wave
B. sine wave
C. square wave
D. half wave rectified sine wave - In a highly capacitive circuit the__________?
A. apparent power is equal to the actual power
B. reactive power is more than the apparent power
C. reactive power is more than the actual power
D. actual power is more than its reactive power - When an alternating current passes through an ohmic resistance the electrical power converted into heat is__________?
A. apparent power
B. true power
C. reactive power
D. none of the above - The frequency of domestic power supply in Pakistan is_________?
A. 200 Hz
B. 100 Hz
C. 60 Hz
D. 50 Hz - The ratio of active power to apparent power is known as factor__________?
A. demand
B. load
C. power
D. form
