A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt- hours of

26 views
A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt- hours of energy does it consume?

A.20.16 kWh

B.201.6 kWh

C.2.01 kWh

D.8.4 kWh

A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt- hours of energy does it consume?

A.20.16 kWh

B.201.6 kWh

C.2.01 kWh

D.8.4 kWh

Related questions

A certain appliance consumes 350 W. When it is allowed to run continuously for 24 days, it consumes electrical energy equal to: A. 20.16 kWh B. 201.6 kWh C. 2.01 kWh D. 8.4 kWh

How many watt-hours represent 65 W used for 18 h? A.11.7 Wh B.1,170 Wh C.11,700 Wh D.117,000 Wh

A radioactive isotope has a half-life of 10 days. If today there are 125 g of it left, what was its original weight 40 days earlier  (a) 600 g (b) 1000 g (c) 1250 g (d) 2000 g

A transformer operates 24 hours day at full -load. It's full -load efficiency is :  (A) equal all day efficiency (B) more than all -day efficiency (C) less than all -day efficiency (D) equal to maximum efficiency

A 100-watt light bulb turned on for 8 hours uses :  (A) 800 Wh (B) 0.8 kWh (C) 8 kWh (D) None of the above

If you used 600 W of power for 60 h, you have used? A.36 kWh B.3.6 kWh C.10 kWh D.1 kWh

A DC shunt motor has rated rpm of 480. Certain industrial application requires this motor to run at 540 rpm for some time. Which speed control will be desirable? A) Ward Leonard control B) Armature current control C) Field resistance control D) It is not possible to run the motor at more than the rated rpm

Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 k ohms of resistance? A.27.2 mA B.59 mA C.5.9 mA D.590 mA

Which of the following is false for switch statement in C++?  (1) It uses labels instead of blocks (2) we need to put break statement at the end of the group of statement of a condition (3) we can put range for case such as case 1..3 (4) None of these

If it takes 400 ms to use 12,000 J of energy, the power is? A.30 kW B.30 W C.3 W D.300 kW

How many volts does it take to power an Arduino?

A standard AM broadcast station is allowed to transmit modulating frequencies up to 5 kHz. If the AM station is transmitting on a frequency of 980 kHz, compute the maximum and minimum upper and lower sidebands and the total bandwidth occupied by the AM station : (A) 10 kHz (B) 975 kHz (C) 990 kHz (D) 20 kHz

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?

If it takes a transmitted signal 1m sec to go up to the target and come back after reflection, how far is the transmitter from the target? A) 150 Km B) 150 m C) 15 Km D) 1500 m

How many characters per sec (7 bits + 1 parity) can be transmitted over a 2400 bps line if the transfer is synchronous (1 start bit and 1 stop bit)?  A) 300 B) 240 C) 250 D) 275

A transmission line of 200 km has a certain A, B, C and D parameters. If the length is reduced to 60 km

When a resistor R is connected to a current source, it consumes a power of 18 W. When the same R is connected to a voltage source having the same magnitude as the current source, the power absorbed by R is 4.5 W. The magnitude of the current source and the value of R are  (A) √18A and 1Ω (B) 3A and 2Ω (C) 1A and 18Ω (D) 6A and 0.5Ω

If an induction machine is run at above synchronous speed, it acts as

If a 5-bus test system contains 6 transmission lines and one transformer, how many non-zero elements are there in the system Y-bus ? (A) 25 (B) 12 (C) 11 (D) 19

Four amperes of current are measured through a 24 ohms resistor connected across a voltage source. How much voltage does the source produce? A.960 V B.9.6 V C.96 V D.8 V

How many minimum number of NOR gates are required to realize a two-input X-OR gate?

If a relay fails to operate for a fault within its reach, it is said to

If a computer on the network shares resources for others to use, it is called  (1) Server (2) Client (3) Mainframe (4) none

How many bits Internet address is assigned to each host on a TCP/IP Internet which is used in all communications with host?  A) 16 bits B) 32 bits C) 48 bits D) 64 bits

A synchronous motor operates at 0.8 pf lagging. If the field current of the motor is continuously increased  1. The power factor decreases upto a certain value of field current and thereafter it increases.  2. The armature current increases upto a certain value of field current and thereafter it decreases.  3. The power factor increases upto a certain value ... field current and thereafter it, increases.  From these, the correct answer is (a) 1, 2 (b) 3, 4 (c) 1, 3 (d) 2, 4

D.C. motor is to a drive a load which is almost nil for certain part of the load cycle and peak value for short duration. We will select the?

D.C. motor is to drive a load which has certain minimum value for most of the time and some peak value for short duration. We will select the?

How much voltage is needed to produce 2.5 A of current through a 200 ohms resistor? A.50 V B.500 V C.80 V D.8 V

A solar cell of 350 V is feeding power to an ac supply of 440 V, 50 Hz through a 3-phase fully controlled bridge converter. A large inductance is connected in the dc circuit to maintain the dc current at 20 A. If the solar cell resistance is 0.5 Ohm ,then each thyristor will be reverse biased for a period of  (A) 125o (B) 120o (C) 60o (D) 55o

Two light bulbs are connected in series across a 120 V battery. Bulb 1 uses 40 W of power and Bulb 2 uses 20 W of power. If bulb 1 alone is connected to the 120 V source, then it will consume (A) 90 W (B) 80 W (C) 60 W (D) 180 W

With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals?

Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open?

How many amps do you need for a house?

The electrode rod used for welding uses a coating on it

Photoconductivity is a characteristic of semiconductors. When light falls on certain semiconductors, it (a) Sets free electrons from some of the atoms, increasing the conductivity (b) Ejects electrons into space (c) Establishes a potential difference creating a source of EMF (d) Produces heat raising the temperature

An antenna located in a city is a source of radio waves. How much time does it take the wave to reach a town 12,000 km away from the city?  a. 36 s b. 20 us c. 20 ms d. 40 ms

How many flip-flops are required to build a binary counter circuit to count from 0 to 1023 ? (a) 1 (b) 6 (c) 10 (d) 23

About how many times longer would a 10 watt light bulb be able to burn compared to a 100 watt bulb with the same energy?  (A) 10 times longer (B) 100 times longer (C) Same time (D) None of the above

How many flip-flops are required to construct a mod-32 counter?  A) 32 B) 6 C) 5 D) 4

If a transformer is continuously operated the maximum temperature rise will occur in?

In a certain loaded transformer, the secondary voltage is one-fourth the primary voltage. The secondary current is? A.one-fourth the primary current B.four times the primary current C.equal to the primary current D.one-fourth the primary current and equal to the primary current

Number of commutator bars for a 4-pole, 2-layer, DC lap winding with 24 slots and one conductor per layer is (A) 48 (B) 24 (C) 192 (D) 96

If a current of 500 mA charges a dielectric for 2 s, how much charge is stored in the dielectric?

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

If the capacity of a battery is 2800 mAh, it can supply 1.4 Ampere current for