24 views
in Electrical Engineering by
What is the power factor when a single phase watt meter operating on 200 V and 5 A for 5 hours makes 2016 revolutions and the meter constant in revolution is 420?

A) 0.04 B) 1.04

C) 0.96 D) None of these

1 Answer

0 votes
by

What is the power factor when a single phase watt meter operating on 200 V and 5 A for 5 hours makes 2016 revolutions and the meter constant in revolution is 420?

A) 0.04 B) 1.04

C) 0.96 D) None of these

Related questions

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 15 views

With a neat sketch explain working of 1 phase dynamometer type power factor meter.

asked Sep 6, 2018 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
1 answer 11 views

One single-phase energy meter operating on 230 V and 5 A for 5 hours makes 1940 revolutions. Meter constant is 400 rev/kWh. The power factor of the load is

asked Apr 23, 2018 in Electrical Engineering by Shimroz123
1 answer 41 views

A 230 V/460 V single-phase transformer operating at 20 A and unity power factor has primary referred resistance of 0.2 Ω and reactance of 0.5 Ω. The approximate primary induced emf is (A) 216 V (B) 226 V (C) 234 V (D) 236 V

asked Apr 28, 2018 in Electrical Engineering by Shimroz123
0 answers 24 views

Explain power in single phase AC circuit.

asked Mar 11, 2018 in Computer techniques in power system by Quiz
1 answer 44 views

In an alternator at lagging power factor the generated voltage per phase as compared to that at unity power factor?

asked Mar 18, 2018 in Alternator by Shimroz123
1 answer 446 views

A single core cable is designed to work for a single phase system with a peak voltage of 220 kV. The maximum permissible stress in the dielectric is not to exceed 20 kV/mm. For economical size, the overall core diameter of the cable is (A) 28.2 mm (B) 26.4 mm (C) 24.4 mm (D) 22.0 mm

asked Apr 28, 2018 in Electrical Engineering by Shimroz123
1 answer 30 views

The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be?

asked Mar 20, 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
1 answer 36 views

write short notes on single phase system.

asked Dec 12, 2017 in Electrical Engineering by Quiz
1 answer 74 views

The power consumed in a circuit element will be least when the phase difference between the current and voltage is?

asked Mar 24, 2018 in Electrical Engineering by Shimroz123
0 answers 21 views

Describe the gate circuit for a single phase full converter.

asked Mar 11, 2018 in Power Electronics by Quiz
1 answer 19 views

A 200 V, 5 A d.c. energy meter is tested at its marked ratings. The resistance of the pressure circuit is 8000 Ω and that of current coil is 0.1 Ω. The power consumed when testing the meter with phantom loading with current circuit excited by a 6 V battery is (A) 2.5 W (B) 5 W (C) 32.5 W (D) 35 W

asked Apr 28, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 24 views

State the application of phase sequence indicator; clip on ammeter, frequency meter & P.F. meter.

asked Sep 5, 2018 by Shimroz123
1 answer 38 views

In a 230 V, 50 Hz single-phase SCR bridge converter operating at a firing delay angle, α and with large R-L load, the input source current is (A) sinusoidal current (B) constant dc current (C) continuous rectangular pulses (D) alternating rectangular pulses

asked Apr 28, 2018 in Power Electronics by Shimroz123
1 answer 45 views

A single phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage regulation at 0.8 pf lagging would he

asked May 3, 2018 in Power system by Shimroz123
0 answers 19 views

What are the five types of single phase motors used in the industry?

asked Mar 15, 2018 in Electrical Machine by Quiz
1 answer 47 views

The potential coil of a single phase dynamometer wattmeter has 4840 Ohm resistance. Voltage across the load is 220 V. With the potential coil connected on the load side, the meter indicates 100 W. Approximate percentage error due to wattmeter connection is (A) 11% (B) 9% (C) 1.1% (D) 3%

asked Apr 25, 2018 in Instrumentation and control by Shimroz123
1 answer 29 views

Explain the “mitigation of power theft” and “faulty meter replacement” for energy conservation techniques to reduce commercial losses. 

asked Sep 22, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 29 views

The synchronous motor which works on leading power factor and does not drive any mechanical load is called?

asked Mar 18, 2018 in Synchronous machine by Shimroz123
0 answers 11 views

What is a digital power meter?

asked Mar 10, 2018 in Power quality 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
2 answers 49 views

What is the power factor of purely resistive circuit.

asked Mar 16, 2018 in Electrical Engineering by Quiz
1 answer 30 views

How does a single phase induction motor work?

asked Mar 17, 2018 in Electrical Machine by Shimroz
1 answer 27 views

A transformer has negative voltage regulation when its load power factor is   (1) Zero (2) Unity (3) Leading (4) Lagging

asked Apr 30, 2018 in Power system by Shimroz123
1 answer 20 views

An unexcited single phase synchronous motor is ?

asked Mar 18, 2018 in Synchronous machine by Shimroz123
2 answers 3 views

State the meaning of creeping error in 1 phase energy meter.

asked Sep 6, 2018 by Shimroz123
1 answer 32 views

explain the working of single phase induction motor.

asked Oct 24, 2017 in Electrical Machine by Quiz
1 answer 21 views

Minimum voltage regulation occurs when the power factor of the load is?

asked Mar 19, 2018 in Transformer by Shimroz123
0 answers 13 views

What is an RF Power Meter?

asked Mar 10, 2018 in Power quality by Quiz
0 answers 17 views

What is power quality meter?

asked Mar 10, 2018 in Power quality by Quiz
1 answer 54 views

The product of apparent power and cosine of the phase angle between circuit voltage and current is?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
1 answer 47 views

The power factor of a D.C. circuit is always?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
1 answer 83 views

The input of an A.C. circuit having power factor of 0.8 lagging is 40 kVA The power drawn by the circuit is?

asked Mar 25, 2018 in Electrical Engineering 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
...