Description : What is the Leading Power Factor ?
Last Answer : When the capacitive load of an AC circuit exceeds the inductive load , the pf of the circuit is called the leading pf . Thank you!
Description : What is the leading power factor ?
Last Answer : When the amount of capacitive load is more than the inductive load in a circuit then the power factor of that circuit is called leading power factor.
Description : When is the power factor lagging , leading , unity ?
Last Answer : Power factor lagging in inductive load. Power factor leading in capacitive load is power factor unity in resistive load.
Description : What is Leading Power Factor ?
Last Answer : If the current in the AC circuit is ahead of the voltage, it is called leading power factor.
Description : A transformer has negative voltage regulation when its load power factor is- (a) Zero (b) Unity (c) Leading (d) Lagging
Last Answer : Ans: C
Description : If the excitation of an alternator operating in parallel is decreased below normal, its _____________. A. power factor will change in the lagging direction B. power factor will change in the leading direction C. ampere load will be greatly increased D. kilowatt load will be greatly decreased
Last Answer : Answer: B
Description : When voltage and current developed in an AC circuit reach their peak values at the same time, the power factor is _____________. A. lagging B. leading C. maximum D. minimum
Last Answer : Answer: C
Description : When the voltage and the current developed in an AC circuit reach their peak values at the same time, the power factor is considered to be _____________. A. lagging B. leading C. unity D. infinity
Description : If the excitation is increased to one of two alternators operating in parallel, the _____________. A. power factor will change in the lagging direction B. power factor will change in the leading direction C. kilowatt load will be greatly increased D. ampere load will be greatly decreased
Last Answer : Answer: A
Description : Which of the following statements is true concerning all three-phase alternators? A. Each has three separate but identical armature windings acted on by one system of rotating magnets. B. Each has one ... The three phases always provide power to the load through three sets of slip rings and brushes.
Description : What will happen when power factor is leading in distribution of power?
Last Answer : If there is high power factor, i.e. if the power factor is close to one: 1. Losses in form of heat will be reduced, 2. Cable becomes less bulky and easy to carry, and very cheap to afford, & 3. It also reduces over heating of transformers.
Description : What Will Happen When Power Factor Is Leading In Distribution Of Power?
Last Answer : If their is high power factor, i.e if the power factor is close to one: losses in form of heat will be reduced, cable becomes less bulky and easy to carry, and very cheap to afford, & it also reduces over heating of tranformers.
Last Answer : A:If their is high power factor, i.e if the power factor is close to one: 1.losses in form of heat will be reduced, 2.cable becomes less bulky and easy to carry, and very cheap to afford, & 3. it also reduces over heating of transformers.
Last Answer : If there is high power factor, i.e if the power factor is close to one: Losses in form of heat will be reduced, Cable becomes less bulky and easy to carry, and very cheap to afford. It also reduces over heating of transformers.
Description : The power factor of industrial loads is generally (a) unity (b) lagging (c) leading (d) zero
Last Answer : (b) lagging
Description : [75] Two transformers are connected in parallel. These transformers do not have equal percentage impedance which results A. Short-circuiting of the secondaries B. Power factor of one of the ... have negligible core losses D. Loading of the transformers not in proportion to their kVA ratings.
Last Answer : D. Loading of the transformers not in proportion to their kVA ratings
Description : 51 A transformer has negative voltage regulation when its load power factor is A. Zero B. Unity C. Leading D. Lagging
Last Answer : C. leading
Description : A synchronous motor is operating on no-load at unity power factor. If the field current is increased, power factor will become (A) Leading & current will decrease (B) Lagging & current will increase. (C) Lagging & current will decrease. (D) Leading & current will increase.
Last Answer : Ans: A Initially synchronous motor is operating at no load and unity power factor. When field current increases, the excitation will increase. Therefore, p.f will be leading and current will be I CosΦ < I
Description : An alternator is delivering rated current at rated voltage and 0.8 power-factor lagging case. If it is required to deliver rated current at rated voltage and 0.8 power-factor leading, the required excitation will be (A) less. (B) more. (C) more or less. (D) the same.
Last Answer : Ans: B Over excitation gives leading power factor and under excitation gives lagging p.f .
Description : The armature reaction in a synchronous generator supplying leading power factor load is (A) magnetizing (B) demagnetizing (C) demagnetizing and cross-magnetizing (D) magnetizing and cross-magnetizing
Last Answer : The armature reaction in a synchronous generator supplying leading power factor load is magnetizing and cross-magnetizing
Description : The synchronous motor which works on leading power factor and does not drive any mechanical load is called?
Last Answer : The synchronous motor which works on leading power factor and does not drive any mechanical load is called synchronous condenser.
Last Answer : Yes, we can make the power factor of synchronous motor leading by adjusting its excitation.
Description : Where p is a factor of the leading coefficient of the polynomial and q is a factor of the constant term.?
Last Answer : Anywhere. Provided it is not zero, and number p can be theleading coefficient of a polynomial. And any number q can be theconstant term.
Description : In patients with chronic granulomatous disease which of the following agents increases the synthesis of tumor necrosis factor, leading to activation of phagocytosis? (a) Aldesleukin (b) Cyclosporine (c) Filgrastim (d) Infliximab (e) Interferon gamma
Last Answer : Ans: E
Description : Essential factor leading to the development of well irrigation would be (A) Uneven ground with many natural depressions. (b) Nonporous rocks. (c) High water table and soft soil. (d) None
Last Answer : (c) High water table and soft soil.
Description : What is meant by 'energy crisis'? (a) Shortage of hydro-electricity (b) Malnutrition leading to short supply of energy in the human body (c) Shortage of the thermal power (d) Impending danger of total exhaustion of fossil fuels like coal and petroleum
Last Answer : Ans: (b)
Description : A motor which can conveniently be operated at lagging as well as leading power factors is the (A) squirrel cage induction motor. (B) wound rotor induction motor. (C) synchronous motor. (D) DC shunt motor.
Last Answer : (C) synchronous motor.
Description : A motor which can conveniently be operated at lagging as well as leading power factors is the: (A) squirrel cage induction motor (C) synchronous motor (B) wound rotor induction motor (D) DC shunt motor
Last Answer : A motor which can conveniently be operated at lagging as well as leading power factors is the: synchronous motor