Can you help by answering this question?

How does a PSC motor work?

36 views
in Electrical Measurements and Instrumentation by
An induction type energy meter is found to run fast. Correction for this error can be made by 

(A) Over-load compensation.

(B) Voltage compensation.

(C) Moving the brake magnet away from the centre of the disc.

(D) Moving the brake magnet towards the centre of the disc.

1 Answer

0 votes
by

An induction type energy meter is found to run fast. Correction for this error can be made by Moving the brake magnet away from the centre of the disc.

Related questions

1 answer 15 views

List any four errors in induction type energy meter. Give method of compensation for each.

asked Sep 5, 2018 by Shimroz123
1 answer 10 views

State the function and shape of following parts used in induction type energy meter: i) Series magnet ii) Shunt magnet iii) Al disc iv) Brake magnet

asked Sep 6, 2018 by Shimroz123
1 answer 17 views

Draw a neat sketch of 1-ph induction type energy meter and write operating principle of it. 

asked Sep 6, 2018 by Shimroz123
1 answer 11 views

Why energy meter is integrating type measuring instrument?

asked Sep 5, 2018 by Shimroz123
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 53 views
3 answers 87 views

What type of meter is used to measure current?

asked Mar 10, 2018 in Electrical Measurements and Instrumentation by Quiz
2 answers 3 views

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

asked Sep 6, 2018 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 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 8 views

What is meant by energy meter constant?

asked Sep 6, 2018 by Shimroz123
2 answers 35 views

Explain energy conservation technique “by improving power quality” for induction motor.

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

Phantom loading for testing of energy meter is used (A) to isolate the current and potential circuits (B) to increase power loss during testing (C) for meters having low current ratings (D) to test meters having a large current rating for which loads may not be available

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

With neat diagram explain calibration of energy meter by direct loading method.

asked Sep 6, 2018 by Shimroz123
1 answer 6 views

Describe principle of operation of Doppler type ultrasonic flow meter with diagram. 

asked Sep 8, 2018 by Shimroz123
1 answer 110 views

Draw the diagram and explain the working of ferrodynamic type frequency meter. 

asked Sep 6, 2018 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
2 answers 65 views

Explain working of Weston type frequency meter.

asked Sep 5, 2018 by Shimroz123
1 answer 13 views

Draw a block diagram of electronic energy meter. Write function of each block.

asked Sep 6, 2018 by Shimroz123
1 answer 10 views

Draw and describe working of electronic energy meter.

asked Sep 6, 2018 by Shimroz123
1 answer 9 views

Write any two advantages of digital energy meter.

asked Sep 5, 2018 by Shimroz123
1 answer 22 views

In the induction type directional over current relay, when a short-circuit occurs in the circuit (A) power flows in reverse direction (B) power flows in normal direction (C) directional power element does not operate (D) over current element is not energized

asked Apr 28, 2018 in Switchgear And Protection by Shimroz123
0 answers 9 views

Energy meter runs slowly even if power is not used. This error is called (a) Speed error (b) Phase error (c) Creeping error (d) None of these

asked May 26, 2018 in Electrical Measurements and Instrumentation by Shimroz123
0 answers 15 views

Which type of heater is cheapest to run?

asked Mar 11, 2018 in Utilization of electrical energy by Quiz
1 answer 11 views

In an induction type energy meter, the steady speed attained by the rotating disc is  1. Proportional to the deflecting torque. 2. Proportional to the resistance of the path of eddy currents. 3. Inversely proportional to the effective readings of disc from its axis. 4. Inversely proportional to the square of brake magnet flux.  Which of the above are correct ?

asked Apr 23, 2018 in Electrical Engineering by Shimroz123
1 answer 19 views

Generally, Crawling in squirrel cage induction motors is tendency to run stably at speeds as low as (A) One-third of their synchronous speed (B) One-fifth of their synchronous speed (C) One-seventh of their synchronous speed (D) One-ninth of their synchronous speed

asked Apr 28, 2018 in Electrical Machine 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
1 answer 44 views

The meter which does not have any component in it to provide control torque is (A) Electrodynamometer for current measurement (B) Electrodynamometer for voltage measurement (C) Electrodynamometer for power measurement. (D) Electrodynamometer for power factor measurement.

asked Apr 28, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 8 views

n-type semiconductor can be made by adding ____ to intrinsic semiconductor (A) Boron (B) Arsenic (C) Carbon (D) Germanium

asked May 12, 2018 in Electronics Engineering by Shimroz123
1 answer 21 views

In a 3-phase slip-ring induction motor, the slip at some speed is 0.05. The speed is reduced by inserting an external resistance in the rotor circuit and the slip is 0.15. If the rotor winding resistance per phase is 0.2 Ω, the external resistance is (A) 0.2 Ω (B) 0.3 Ω (C) 0.4 Ω (D) 0.5 Ω

asked Apr 28, 2018 in Electrical Machine by Shimroz123
1 answer 56 views

Write how energy can be stored or generated in each of following : i) solar cell ii) geothermal energy iii) hydrogen energy in biomass.

asked Sep 8, 2018 by Shimroz123
1 answer 21 views

Torque developed by a three-phase, 400V, induction motor is 100 N -m. If the applied voltage is reduced to 200-V, the d'veloped torque will be

asked Apr 29, 2018 in Electrical 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 28 views

Why starter is required for starting an induction motor?

asked Mar 15, 2018 in Electrical Engineering by Quiz
1 answer 26 views

A moving coil of meter has 100 turns, and a length and depth of 10mm and 20mm respectively. It is positioned in a uniform radial flux density of 200 mT. The coil carrier current capacity is 50 mA. The torque on the coil is

asked Apr 29, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 39 views

The rotor impedance of a slip ring induction motor is (0.1 + j0.6)Ohm/ ph . The resistance/ph to be inserted into rotor to get maximum torque at starting should be

asked May 3, 2018 in Electrical machine design 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
...