Can you help by answering this question?

Professionally designed model presentations are called ...

21 views
in Electrical Measurements and Instrumentation by

Your answer

Thanks for your contribution. Feel free to answer this question. Please avoid short answer. Your answer is most welcome. Be genuine.

Upload image or document:

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
Are you a robot ? (Y = Yes / N = No)
To avoid this verification in future, please log in or register.

1 Answer

0 votes
by

Wattmeter cannot be designed on the principle of moving iron instrument.

Related questions

1 answer 21 views

Which of the following is an inherent property of an optical signal and cannot be eliminated even in principle? (1) Thermal noise (2) Shot noise (3) Environmental noise (4) Background Noise

asked May 29, 2018 in Electronics communication by Shimroz123
1 answer 15 views

Measurement of power and power factor of a 3-phase system by two wattmeter method can be obtained in case of  1. Balanced load and balanced source  2. Balanced source with 3-phase 3-wire unbalanced load  3. Unbalanced source with 3-phase 3-wire balanced load  4. Balanced source with 3-phase 4-wire unbalanced load  5. unbalanced and unbalanced source    (a) 1 only (b) 2, 3 and 5 (c) 1, 2, 3, 4 and 5 (d) 1, 2, 3 and 5 

asked May 13, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 198 views
0 answers 14 views

If a dynamometer wattmeter is connected in an ac circuit, the power indicated by the wattmeter will be (a) volt-ampere product (b) average power (c) peak power (d) instantaneous power 

asked May 26, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 10 views

 A Wheatstone bridge cannot be used for precision measurements because errors are introduced into on account of: - a) Resistance of the connecting lead b) Thermoelectric EMFs c) Contact resistance d) all the above

asked Apr 14, 2018 in Instrumentation and control by Shimroz123
1 answer 9 views

Consider the following statements with regard to induction type wattmeter :  1. Can be used on both ac and dc systems.  2. Power consumption is relatively low.  3. It is accurate only at stated frequency and temperature.  Which of the above statements is/are correct ?  (a) 1 only (b) 2 only (c) 3 only (d) 1, 2 and 3

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
1 answer 155 views

Poynting vector wattmeter is based on   (A) Seebeck effect (B) Ferranti effect (C) Induction effect (D) Hall effect

asked May 17, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 13 views

The following property of semiconductors cannot be determined from Hall effect: (1) Semiconductor is n–type or p–type (2) The carrier concentration (3) The mobility of semiconductor (4) The atomic concentration of semiconductor

asked May 29, 2018 in Semiconductor by Shimroz123
0 answers 80 views

Which of the following devices cannot be used as microwave oscillator : a. IMPATT diode b. PN Junction .diode c. TRPATT diode d. BARRITT diode

asked Apr 12, 2018 in Electronics Engineering by Shimroz123
1 answer 10 views

In C# which of the operators cannot be overloaded  A) ! B) = C) + D) all of the above

asked Apr 11, 2018 in Computer Engineering by Shimroz123
1 answer 17 views

The insulation of modern EHV lines is designed based on?

asked Mar 27, 2018 in Power system by Shimroz123
1 answer 18 views

 In the measurement of power of balanced load by two wattmeter method in a 3-phase circuit, The readings of the wattmeters are 4 kW and 2 kW respectively, the later is being taken after reversing the connections of current coil. the power factor and reactive power of the load is A) 0.2 & 6 kVAR B) 0.2 & 6 √3 kVAR C) 0.32 & 2 kVAR D) 0.32 & 2 √3 kVAR

asked Jun 17, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 10 views

 In dynamometer type of wattmeter, which of the coil is split up into two parts?

asked May 29, 2018 in Electrical Measurements and Instrumentation by Shimroz123
0 answers 18 views

While measuring power in a three phase load by two wattmeter method, the reading of two wattmeter are equal and opposite, when (a) load is balanced (b) power factor is unity (c) phase angle is between 60° to 90° (d) the load is purely inductive 

asked May 26, 2018 in Electrical Measurements and Instrumentation by Shimroz123
0 answers 17 views

The current coil of a wattmeter is connected to the C.T. of R phase. Its potential coil is connected across Y & B phases. The wattmeter measures (a) active power in R phase (b) active power of Y-phase (c) reactive power in R-phase (d) power proportional to 3-phase power if the load is balanced 

asked May 25, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 11 views

For power measurement of three phase circuit by two wattmeter method, when the value of power factor is less than 0.5 lagging:

asked May 22, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 10 views

The pressure coil of a dynamometer type wattmeter is  A) Highly inductive B) Highly resistive C) Purely resistive D) Purely inductive

asked May 20, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 9 views

Consider the following statements  1) The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil ii) The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit  A) (i) is true but (ii) is false B) (i) is false but (ii) is true C) Both (i) and (ii) are true D) Both (i) and (ii) are false

asked May 20, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 12 views

The minimum number of wattmeter(s) required to measure 3-phase, 3-wire balanced or unbalanced power is  A) 1 B) 2 C) 3 D) 4

asked May 20, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 14 views

In the measurement of power by two wattmeter method, when the readings of the two wattmeters are equal, the power factor is (A) Zero (B) Leading (C) Lagging (D) Unity

asked May 12, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 16 views

The current coil of a wattmeter is connected to the CT of R-phase. The potential coil is connected across Y and B phases. The wattmeter measures

asked Mar 28, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 22 views

In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be?

asked Mar 21, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 12 views

Compare CC and PC of wattmeter on the basis of:- (i) Connection (ii) Status (iii) Number of turns (iv) Gauge of wire.

asked Sep 6, 2018 by Shimroz123
1 answer 17 views

A d.c. potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18V obtains balance at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf0fthe test cell is  A)1.00V B)1.34V C)1.50V D)1.70V 

asked May 20, 2018 in Electrical Measurements and Instrumentation by Shimroz123
0 answers 26 views

A CRO cannot be used for direct measurement of   (a) Voltage (b) Current (c) Frequency (d) Power

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
0 answers 11 views

Following type of multiplexing cannot be used for analog signalling  (a) FDM (b) TDM (c) CDM (d) None of these

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 23 views

Integrating principle in the digital measurement is the conversion of   (a) Voltage to time (b) Voltage to frequency (c) Voltage to current (d) Current to voltage

asked May 13, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 16 views

The power delivered to a three-phase load can be measured by the use of 2 wattmeter only when the A. Load is balanced B. 3 -phase load is connected to the source through 3 wires C. Load is unbalanced D. 3 -phase load is connected to the source through 4 wires

asked Apr 12, 2018 in Electrical Engineering by Shimroz123
0 answers 20 views

A Phase shift transformer is designed to control 150 MVA on a 230 kV, 3 phase line. The phase angle is variable between zero and 15 deg. Calculate the approximate basic power rating of the transformer.  (A) 150 MVA (B) 56 MVA (C) 75 MVA (D) 750 MVA 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views

Klystron operation is based on the principle of  a) Velocity modulation b) Amplitude modulation c) frequency modulation d) Phase modulation

asked Jun 15, 2018 in Electronics Engineering by Shimroz123
1 answer 15 views

The transformer works on the principle of: (A) Mutual induction (B) Mutual capacitance (C) All of the above (D) None of the above

asked May 8, 2018 in Electrical Engineering by Shimroz123
1 answer 18 views

The operation of a ramp type Digital Voltmeter is based on the principle of (A) Voltage-to-current conversion. (B) Voltage-to-time conversion. (C) Current-to-time conversion. (D) Current-to-frequency conversion.

asked Apr 28, 2018 in Digital Instrumentation by Shimroz123
1 answer 17 views

A servo motor works on the same basic principle as that of a : - a) two phase induction motor b) single phase induction motor c) three phase induction motor d) synchronous motor

asked Apr 14, 2018 in Instrumentation and control by Shimroz123
0 answers 25 views

Principle of operation of LVDT is based on the variation of  A) Mutual inductance B) Self-inductance C) Capacitance D) Resistance

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 27 views

The Q-meter works on the principle of  A) Mutual inductance B) Self inductance C) Series resonance D) Parallel resonance

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
1 answer 488 views

Explain the principle of ON-OFF control and phase control of AC voltage controller with suitable circuit and waveforms.

asked Feb 14, 2018 in Unit 6 by Quiz
1 answer 12 views

A wattmeter is connected as shown in the figure. The wattmeter reads 

asked May 20, 2018 in Electrical Measurements and Instrumentation 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

8,480 questions

7,077 answers

134 comments

3,088 users

...