28 views
in Electrical Engineering by
The energy used by a 1.5kW heater in 5 minutes is:

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

The energy used by a 1.5 kW heater in 5 minutes is: 450000 J

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
0 answers 10 views

If a 220 V heater is used on 110 V supply, the heat produced by it will be nearly (a) one half (b) twice (c) one-fourth (d) four times 

asked May 25, 2018 in Electrical Engineering by Shimroz123
1 answer 27 views

A nichrome wire used as heater coil has the resistance of 1 ohm/m. For a heater of 1000 W at 200 V, the length of wire required will be 

asked Mar 31, 2018 in Electrical Engineering by Shimroz123
1 answer 18 views

A rectangular waveguide is 5.1 cm by 2.4 cm (inside dimension). The cut off frequency of the dominant mode is

asked May 23, 2018 in Electrical Engineering by Shimroz123
1 answer 17 views

An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is approximately equal to: A. 385Ω B. 38.5Ω C. 3.1Ω D. 31Ω

asked Apr 12, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views

The current in a 200 mH coil increases from 2 to 5 A in 0.1 Second. What is rate of change of current? A. 30 A/s B. 20 A/s C. 10 A/s D. none of these

asked Apr 12, 2018 in Electrical Engineering by Shimroz123
1 answer 23 views

A current of 4 amperes flowing for 45 minutes deposits 1.062 gm of metal at cathode. Calculate the equivalent weight of the metal. (Given 1 Faraday = 96500 C)

asked Sep 3, 2018 by Shimroz123
1 answer 10 views

A 1000 watts heater is connected to a 240 V AC Supply. Then the current drawn by the heater is

asked May 15, 2018 in Electrical Engineering by Shimroz123
0 answers 26 views

If 1 ampere current is flowing through a 100 mH coil, then energy stored in the coil is (a) 0.05 Joules (b) 0.5 Joules (c) 5.0 Joules (d) None of these

asked May 25, 2018 in Electrical Engineering by Shimroz123
1 answer 7 views

An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is approximately? A.385 ohms B.38.5ohms C.3.1 ohms D.31 ohms

asked May 15, 2018 in Basic concepts by Shimroz123
1 answer 24 views

In a balanced 3 -phase 200 V circuit, the line current is 115.5 A. When the power is measured by two wattmeter method, one of the wattmeters reads 20 kW and the other one reads zero. What is the power factor of the load ?

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

The current transformer that is used to measure a 100 A current by 5 A ammeter is a_____.

asked May 29, 2018 in Transformer by Shimroz123
1 answer 20 views

An emf of 120 V causes a current of 3A to flow in a circuit how much energy is supplied by the source in 12 seconds. A. 4130 J B. 4310 J C. 4320 J D. None of these 

asked Apr 12, 2018 in Electrical Engineering by Shimroz123
1 answer 30 views

A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 150 views

The Lamp resistance of a mini-torch light, operating on 1.5 volts is classified as _____________resistance. A. Low B. Medium C. High D. None of these 

asked Apr 12, 2018 in Electrical Engineering by Shimroz123
0 answers 14 views

If a current of 1.5 A charges a dielectric for 5 s, how much charge is stored in the dielectric?

asked Jul 1 by Shimroz123
0 answers 6 views

What is the output voltage of a battery if 12 J of energy is expended in moving 1 C of charge?

asked Jul 1 by Shimroz123
0 answers 8 views

What is the output voltage of a battery if 6 J of energy is expended in moving 1 C of charge?

asked Jul 1 by Shimroz123
0 answers 7 views

What is the output voltage of a battery if 10 J of energy is expended in moving 1.25 C of charge?

asked Jul 1 by Shimroz123
0 answers 41 views

A 0.5 Hp, 6 pole wound rotor induction motor is excited by a 3 phase 60 Hz source. Calculate the frequency of the rotor current at standstill.  (A) 50 Hz (B) 30 Hz (C) 60 Hz (D) 120 Hz 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
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 14 views

A d.c. source has an open circuit voltage of 30 V and an internal resistance of 1.5 Ohm. A resistive load is connected to the source. Maximum power dissipated in the load is (A) 300 W (B) 150 W (C) 45 W (D) 20 W

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
0 answers 17 views

A 1:5 step-up transformer has 120V across the primary and 600 ohms resistance across the secondary. Assuming 100% efficiency, the primary current will be:  (A) 0.2 Amp. (B) 5 Amps. (C)10 Amps. (D) 20 Amps

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

The energy radiated by Sun on a bright Sunny day is approximately:  (A) 700 W/m² (B) 800 W / m² (C) 1 kW / m² (D) 2 kW / m²

asked May 8, 2018 in Electrical Engineering 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 12 views

The mass of ions in grams which is liberated or deposited by chemical action by the passage of 1 C of electricity _______ A) electrochemical force B) electrochemical voltage C) electrochemical equivalent D) none of these

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 12 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
0 answers 10 views

How much energy is expended, in joules, if a voltage of 12 V moves 1.25 C of charge between two points?

asked Jul 1 by Shimroz123
0 answers 47 views

The connected load of a consumer is 2 kW and his maximum demand is 1.5 kW. The load factor of the consumer is (a) 0.375 (b) 0.75 (c) 1.33 (d) None of these  

asked May 26, 2018 in Electric Power Transmission by Shimroz123
0 answers 16 views

A commutator with a diameter of 50 cm rotates at 1000 r.p.m. If brush width is 1.5 cm, the time of commutation will be (a) 0.168 m sec (b) 0.374 m sec (c) 0.481 m sec (d) 0.573 m sec

asked May 25, 2018 in Electrical Machine by Shimroz123
1 answer 22 views

The armature resistance of a permanent magnet dc motor is 0.8 Ohm. At no load, the motor draws 1.5 A from a supply voltage of 25 V and runs at 1500 rpm. The efficiency of the motor while it is operating on load at 1500 rpm drawing a current of 3.5 A from the same source will be  (A) 48.0% (B) 57.1% (C) 59.2% (D) 88.8%

asked May 17, 2018 in Electrical Machine by Shimroz123
1 answer 101 views

The loop transfer of a system is G(s) H(s) = 5/(s+1) (2s+1)(3s+1) which has the phase crossover frequency fc = 0.16 Hz. The gain margin (dB) of the system is  (a) 6 (b) 4 (c) 2 (d) 0

asked May 15, 2018 in Control System by Shimroz123
1 answer 30 views

The Q factor of a coil at resonant frequency 1.5 MHz of an RLC series circuit is 150. The Bandwidth is : - a) 225 MHz b) 1.06 MHz c) 10 KHz d) 10 MHz

asked Apr 14, 2018 in Instrumentation and control by Shimroz123
0 answers 20 views

The gain of a parabolic dish antenna of 1 m diameter -and 80% efficiency at 9.5 GHz is: a. 39 dB b. 78 dB c. 40 dB d. 45 dB

asked Apr 12, 2018 in Electronics Engineering by Shimroz123
0 answers 15 views

The declaration  Int (*p) [5] means  (1) p is a one dimensional array of size 5, of pointers to integers (2) p is a pointer to a 5 element integer array (3) same as int *p[5]; (4) none of these

asked Apr 10, 2018 in Computer Engineering by Shimroz123
1 answer 58 views

A 6-pole, 50Hz, 3-φ induction motor is running at 950 r.p.m. and has Cu loss of 5kW. The rotor input is (a) 10 kW (b) 95 kW (c) 100 kW (d) 9.5 kW 

asked May 25, 2018 in Induction Machine by Shimroz123
1 answer 13 views

To find current in a resistance connected in a network, Thevenin's theorem is used VTH = 20 V and RTH = 5 Ω. The current through the resistance: (1) is 4 A (2) is 4 A or less (3) is less than 4 A (4) May be 4 A or less or more than 4 A

asked May 29, 2018 in Network Analysis by Shimroz123
1 answer 19 views

A 1000W heater is rated to operate at a direct current (DC) of 10A. If the heater is supplied alternating current (AC) for producing the same quantity of heat the value of current should be  a. Iav=10A b. Irms=10A c. Ipeak=10A 

asked May 17, 2018 in Electrical Engineering by Shimroz123
1 answer 25 views

If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be?

asked Mar 25, 2018 in Network Analysis by Shimroz123
1 answer 10 views

Eddy current losses in transformer cores can be reduced by the use of  1. Solid cores  2. Laminated cores  3. Ferrites  Select the correct answer using the codes given below : (a) 2 and 3 only (b). 1 and 2 only (c) 1 and 3 only (d) 1, 2 and 3

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
1 answer 46 views

In a differential amplifier the differential voltage gain is 500 and the common mode voltage gain is 0.5. The CMRR in dB is (a) 80 (b) 60 (c) 30 (d) 20

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
0 answers 21 views

A dc shunt motor runs at 500 r.p.m at 220 V. A resistance of 4.5 Ω is added in series with the armature for speed control. The armature resistance is 0.5 ohms. The current to stall the motor will be (1) 44 A (2) 50 A (3) 44.4 A (4) 60 A  

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
0 answers 34 views

A meter whose constant is 600 revolutions/kWh makes 5 revolutions in 20 seconds. Calculate the load in kW. (1) 0.5 kW (2) 1 kW (3) 1.5 kW (4) 2 kW  

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
0 answers 17 views

What is the equivalent resistance of a network having 5 resistors of each 10ohm connected in parallel?  (A) 10 Ohms (B) 50 Ohms (C) 500 Ohms (D) 2 Ohms 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
0 answers 15 views

Total numbers of ascending runs in the sequence 4 6 7 2 9 1 2 8 9 3 0  (1) 3 (2) 5 (3) 7 (4) 9  

asked Apr 10, 2018 in Computer Engineering by Shimroz123
0 answers 44 views

A thyristor is triggered by a pulse train of 5 kHz. The duty ratio is 0.4. If the allowable average power is 100 W, the maximum allowable gate drive power will be 

asked May 25, 2018 in Power Electronics by Shimroz123
1 answer 30 views

For controlling the vibration of the disc of ac energy meter, damping torque is produced by

asked Apr 23, 2018 in Electrical Engineering by Shimroz123
1 answer 69 views

What percent of the input energy is radiated by filament lamps ?  (1) 2 to 5 percent (2) 10 to 15 percent (3) 25 to 30 percent (4) 40 to 50 percent

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

How much is the potential difference between two points if 0.5 J of energy is required to move 0.4 C of charge between the two points?

asked Jul 1 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

8,471 questions

7,069 answers

134 comments

3,088 users

...