Can you help by answering this question?

Why do we need to correct power factor?

20 views
in Electrical Engineering by
In a capacitor start single-phase induction motor, the capacitor is connected in: 

(A) series with the main winding (B) series with the auxiliary winding (C) series with both the windings (D) parallel with the auxiliary winding .

1 Answer

0 votes
by

In a capacitor start single-phase induction motor, the capacitor is connected in: series with the auxiliary winding 

Related questions

1 answer 14 views

In the capacitor-start, capacitor-run single-phase induction motor (A) two capacitors are connected across the main winding (B) when the centrifugal switch opens, the permanent capacitor is left in the auxiliary winding circuit (C) when the centrifugal switch opens, the permanent capacitor is left in the main winding circuit (D) two capacitors are connected across the auxiliary winding.

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
1 answer 11 views

A capacitor start, capacitor run single phase induction motor is basically a : -  a) ac series motor b) dc series motor c) 2 phase induction motor d) 3 phase induction motor

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
1 answer 13 views

For a single phase capacitor start induction motor, which of the following statements is valid?  A) The capacitor is used for power factor improvement B) The direction of rotation can be changed by reversing the main winding terminals C) The direction of rotation cannot be changed D) The direction of rotation can be changed by interchanging the supply terminals

asked May 17, 2018 in Induction Machine by Shimroz123
1 answer 25 views

A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will?

asked Mar 20, 2018 in Induction Machine by Shimroz123
0 answers 20 views

Draw and explain capacitor start capacitor run single phase induction motor.

asked Sep 1, 2018 by Quiz
0 answers 17 views

Compare resistance split phase induction motor with capacitor start induction motor.

asked Sep 1, 2018 by Quiz
1 answer 20 views

In a single-phase induction motor, the operating direction is determined by the ________ A) Rotor B) Stator C) Starting circuit D) None of these

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 58 views

Starting torque can be obtained in the case of a single phase induction motor with identical main and auxiliary windings by connecting:  (1) A capacitor across the mains (2) A capacitor in series with the machine (3) A capacitor is series with the auxiliary winding (4) Equal value capacitors in series with the main and the auxiliary windings

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
1 answer 18 views

What is the slip (as a percentage) when a 6 pole single phase induction motor operating on 220 V and 60 Hz is rotating at speed of 1140 rpm? A) 60% B) 5% C) 10% D) None of these

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
0 answers 11 views

The no~load current of a single phase induction motor is around _____% of full load current.  (1) 10 (2) 20 (3) 40 (4) 80

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
1 answer 16 views

In a single phase induction motor driving a fan load, the reason for having a high resistance rotor is to achieve (A) low starting torque (B) quick acceleration (C) high efficiency (D) reduced size

asked May 17, 2018 in Induction Machine by Shimroz123
1 answer 23 views

In a single-phase induction motor when the rotor is stationary and voltage is applied to the stator, then (A) the flux is constant (B) the flux first decreases and then increases in the same direction (C) the flux increases and decreases in the opposite direction with the same magnitude (D) current flows through the rotor

asked Apr 28, 2018 in Electrical Machine by Shimroz123
0 answers 51 views

If the stator winding of a three-phase induction motor is delta connected, the rotor winding   (a) should be delta connected (b) should be star connected (c) should not be delta connected (d) may be delta or star connected 

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
1 answer 14 views

 As compared to a split phase motor, a capacitor start motor has _____.

asked May 29, 2018 in Electrical Machine by Shimroz123
1 answer 80 views

The locked rotor current in a 3-phase, star connected 15 , kW 4 , pole 230 V , 50 Hz induction motor at rated conditions is 50 A. Neglecting losses and magnetizing current, the approximate locked rotor line current drawn when the motor is connected to a 236 , V 57 Hz supply is  (A) 58.5 A (B) 45.0 A (C) 42.7 A (D) 55.6 A

asked May 17, 2018 in Electrical Machine by Shimroz123
1 answer 15 views

Reduction in the value of capacitance of a capacitor -start motor, results in reduced: (A) noise (B) speed (C) starting torque (D) armature reaction

asked Apr 11, 2018 in Computer Engineering by Shimroz123
0 answers 12 views

The direction of rotation of an ordinary shaded pole single phase induction motor (1) Can be reversed by reversing the supply terminal connections to the stator winding (2) Cannot be reversed (3) Can be reversed by open circuit the shading rings (4) Can be reversed by short circuit the shading rings

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
0 answers 19 views

A delta connected 400 V, 50 Hz, 3-phase induction motor when started direct-on-line takes a starting current of 30 A. When the motor is started through a star-delta starts, the starting current will be (1) 3A (2) 10 A (3) 15 A (4) 30 A 

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
1 answer 516 views

A single-phase induction motor with only the main winding excited would exhibit the following response at synchronous speed  (A) Rotor current is zero (B) Rotor current is non-zero and is at slip frequency (C) Forward and backward rotating fields are equal (D) Forward rotating field is more than the backward rotating field

asked May 18, 2018 in Induction Machine by Shimroz123
1 answer 26 views

The type of single-phase induction motor having the highest power factor at full load is (A) shaded pole type (B) split-phase type (C) capacitor-start type (D) capacitor-run type

asked May 17, 2018 in Induction Machine by Shimroz123
1 answer 21 views

A centre zero ammeters connected in the rotor circuit of a 6-pole 50 Hz induction motor makes 30 oscillations in one minute. The rotor speed is

asked Apr 1, 2018 in Electrical Engineering by Shimroz123
1 answer 16 views

The meter constant of a single-phase 230 V induction watt hour meter is 400 revolutions per kWh. The speed of the meter disc for a current of 10 A of 0.9 pf lagging will be

asked Apr 23, 2018 in Electrical Engineering by Shimroz123
0 answers 53 views

The meter constant of a single phase 240 V induction watt hour meter is 400 revolutions per KWhr. The speed of the meter disc for a current of 10 A of 0.8 pf, lagging will be  (A) 12.8 rpm (B) 16.02 rpm (C) 18.2 rpm (D) 21.1 rpm 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
0 answers 12 views
1 answer 29 views

The disc of a single phase Induction-type energy meter makes 60 revolutions in 6 minutes. Meter Constant is 1200 rev/kWh. Power consumption in the load is (A) 1.2 kW (B) 1 kW (C) 600 W (D) 500 W

asked Apr 25, 2018 in Instrumentation and control by Shimroz123
1 answer 24 views

A single-phase transformer has a turns ratio of 1 :2 and is connected to a purely resistive load as shown in the figure. The magnetizing current drawn is 1A, and the secondary current is 1A. Ifcore losses and leakage reactances are neglected, the primary current is  A)1.41A B)2A C) 2.24A D)3A

asked May 20, 2018 in Transformer by Shimroz123
0 answers 18 views

Three single phase transformers are connected in delta-delta to step down a line voltage of 138 kV to 4160 V to supply power to a production plant. The plant draws 21 MW at a lagging power factor of 86 %. Calculate the apparent power furnished by the HV line.  (A) 24.4 MVA (B) 48.8 MVA (C) 12.2 MVA (D) 6.1 MVA 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
1 answer 30 views

How does a single phase induction motor work?

asked Mar 17, 2018 in Electrical Machine by Shimroz
0 answers 12 views

In the equivalent circuit of a 3-phase induction motor, the mechanical load on the motor can be represented by a resistance of value (1) R2 (2) R2/S (3) R2(1-S)/S (4) (R2/S)+1 

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
0 answers 83 views

number of windings of a coil in a stator of ac motor for ey slot ac motor

asked Aug 29, 2018 in Electrical machine design by normzhie
1 answer 32 views

explain the working of single phase induction motor.

asked Oct 24, 2017 in Electrical Machine by Quiz
0 answers 31 views

A single phase energy meter has a constant of 1200 revolution/kWh. When a load of 200 W is connected, the disc rotates at 4.2 revolutions per min. If the load is on for 10 hours, the meter records an excess of   (a) 0.1 kWh (b) 0.2 kWh (c) 1.0 kWh (d) 2.0 kWh 

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
1 answer 13 views

A 3-phase delta connected squirrel cage induction motor when started with a DOL starter has a starting torque of 600 NM. Its starting torque when star delta starter is used:

asked May 22, 2018 in Induction Machine by Shimroz123
0 answers 14 views

A single phase motor draws a current of 5 A from a 120 V, 60 Hz line. The power factor of the motor is 65%. Calculate the active power absorbed by the motor.  (A) 600 W (B) 390 W (C) 456 W (D) 650 W 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
1 answer 28 views

A three-phase transformer, connected in star-delta, is composed of three single-phase transformers, each rated 127/ 13.2 kV. The line-to-line voltage ratio for the three-phase transformer is: A) 220 / 13.2 kV B) 127 / 13.2 kV C) 127 / 220 kV D) 220 / 220 kV

asked Jun 4, 2018 in Three phase transformers by Shimroz123
1 answer 9 views

In a single phase induction energy meter, in order to obtain true value of energy, the shunt magnetic flux should lag behind the applied voltage by   (a) 90o (b) 0o (c) 45o (d) 60o

asked May 13, 2018 in Instrumentation and control by Shimroz123
1 answer 11 views

 In a household single phase induction type wattmeter, the meter can be reversed by: - a) reversing the supply terminals b) reversing the load terminal c) opening the meter connection and reversing either the potential coil terminals or current coil terminals d) opening the meter and reversing the connection of both the potential coil terminals and current coil terminals

asked Apr 14, 2018 in Instrumentation and control by Shimroz123

Welcome to electronics2electrical.com here you can ask questions related to electrical, electronics, mechanical, telecommunication, instrumentation, computer, mathematics, physics etc.
Be respectful to all the members. Do not copy and paste the answers from other websites which have copyright content. While asking question give full details about it.

Categories

Most popular tags

power motor dc circuit transformer voltage current used system phase resistance factor synchronous load ac energy induction electric generator series frequency between speed capacitor use electrical meter line difference control type mosfet transmission magnetic plant high single instrument bjt unit source advantages function diode and machine winding field define torque parallel amplifier supply shunt thyristor motors electricity arduino maximum time relay armature problem value on transformers types coil diagram state flow ratio material three formula starting direction theorem method emf operating efficiency digital wave microprocessor test instruments inductance loss measure operation connected signal low applications effect single-phase network temperature working constant losses different law wattmeter measuring compare controlled breaker drive device logic rc full switch flux wire resistivity disadvantages free of materials machines angle force converter conductor transistor gain open protection scr core measurement number bridge principle generators reactance circuits negative the friction iron loop short pole battery conservation steam resistors hysteresis computer using analog lines secondary station gate a rectifier inverter linear induced relays nuclear capacitance basic characteristics design direct work rotor electronics ammeter forces diesel damping rlc connection factors capacitors minimum insulation moving regulation running self systems air fault range main stability quality starter igbt eddy alternator ideal rl average 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors copper rotation feedback impedance measured electronic electrons charge inductive transfer explain start off back curve over solar is three-phase tariff locomotive peak bias zener engineering commutator surge conductors rating universal potentiometer density permanent mechanical transducer capacity memory adc excitation two fuse pure harmonics application semiconductor inductor internal pmmc reaction welding resonance traction permeability breakers rms designed electromagnetic si generation brushes switching capacitive shaded rate 1 distribution resistor methods delta star oscillator reluctance simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel heating earth units

8,450 questions

7,047 answers

132 comments

3,085 users

...