A. reduce eddy current loss
B. increase heat radiation
C. make assembly cheap and easier
D. reduce circuit permeability
Correct Answer: reduce eddy current loss ✔
Last Updated: December 11, 2018
Related MCQs
- All definitions of power factor of a series R-L-C circuit are correct except__________?
- The purpose of a parallel circuit resonance is to magnify________?
- Wire-wound resistors are unsuitable for use at high frequencies because they_______?
- Which of the following statements pertains to resistors only __________?
- Aphasoris________?
- Capacitive susceptance is a measure of__________?
- What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value________ ?
- In a parallel R-C circuit, the current always________the applied voltage?
- Which of the following refers to a parallel circuit ?
- In a sine wave the slope is constant_______?
- In an A.C. circuit power is dissipated in__________?
- Skin effect occurs when a conductor carries current at_______ frequencies
- The power is measured in terms of decibles in case of_________?
- At _______ frequencies the parallel R-L circuit behaves as purely resistive
- At very low frequencies a series R-C circuit behaves as almost purely__________?
- The frequency of domestic power supply in Pakistan is_________?
- In a three-phase supply floating neutral is undesirable because it way give rise to__________?
- The r.m.s. value of half wave rectified sine wave is 200 V. The r.m.s. value of full wave rectified AC. will be__________?
- Which of the following waves has the highest value of peak factor __________?
- The inductance of a coil can be increased by_________?
- The phosphors for which of the following pair are 180° out of phase for VL, VC and VR______?
- The r.m.s. value of pure cosine function is_________?
- The series and parallel resonance on L-C circuit’ differs in that_________?
- The frequency of an alternating current is__________?
- Ohm is unit of all of the following except__________?
- The equation of 50 Hz current sine wave having r.m.s. value of 60 A is__________?
- The power factor of a D.C. circuit is always__________?
- In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will__________?
- In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will__________?
- An A.C. voltage is impressed across a pure resistance of 3.5 ohms in parallel with a pure inductance of impedance of 3.5 ohms?
- The product of apparent power and cosine of the phase angle between circuit voltage and current is
- A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to________?
- When an alternating current passes through an ohmic resistance the electrical power converted into heat is__________?
- In each of the three coils of a three phase generator, an alternating voltage having an r.m.s. value of 220 V is induced. Which of the following values is indicated by the voltmeters ______?
- The power factor at resonance in R-L- C parallel circuit is________?
- In a pure inductive circuit__________?
- In the case of an unsymmetrical alternating current the average value must always be taken over__________?
- The transient currents are associated with the__________?
- In a pure resistive circuit__________?
- In a circuit containing R, L and C, power loss can take place in__________?
- The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces__________?
- The time constant of the capacitance circuit is defined as the time during which voltage________?
- The square waveform of current has following relation between r.m.s. value and average value?
- In a loss-free R-L-C circuit the transient current is__________?
- Power factor of the system is kept high__________?
- Power factor of the following circuit will be zero__________?
- Pure inductive circuit__________?
- Inductance of a coil Varies__________?
- In a highly capacitive circuit the__________?
- Inductance affects the direct current flow__________?
- In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value__________?