A typical electric water heater has a heating element rated at 4500 Watts and is connected...
5. An electric heater has a Nichrome heating element with a resistance of 9 Ω at 20°C. When l 16 V are applied, the electric current heats the Nichrome wire to 1060 C What is the operating wattage of this heater? The temperature coefficient of resistivity of Nichrome is α-0.0004 C Watts
A Single-phase halfwave controlled rectifier is used for a heating system whose rated power is 15kW at 220V. The SCR is connected to a 220 VAC system. 1. Determine the rated equivalent resistance of the heater2. Determine the maximum that the rectifier can provide to the heater3. When the SCR is fired at angle of p/3, determinea. Waveform of the voltages across the load, the SCRb. Waveform of the currents flow through the SCR, drawn by the load and supplied...
A small bathroom heater has a heating element of 10Ω and is connected to a 120-V outlet. Find the current drawn by the heater. If the electrical outlet in the bathroom is connected to a 10-amp breaker, will the breaker ‘trip’ when the heater is turned on
A carbon heater element has fixed resistance of 28 Ohms. It is connected to an A/C source with Peak Voltage value of 133 Volts. What is the Average Power consumed by the element, in Watts?
3. a) An electric water heater uses 5500 W (240 V) of electrical power. It has a capacity of 40 gallons (150 liters or 150 kg). If the initial temperature of the water in the water heater is 20° C, how long will it take to heat the water to a final temperature of 60° C at 100% efficiency? b) How long will it take to heat the water to a final temperature of 60°C at 80% efficiency? c)If electrical...
An electric heater is rated at 1360 W, a toaster is rated at 960 W, and an electric grill is rated at 1750 W. The three appliances are connected in parallel across a 120 V emf source. (a) Find the current in each appliance. heater A toaster A grill A (b) Is a 32.0 A circuit breaker sufficient in this situation? What is the total possible current through the circuit? , ___ because the total current is A
Electric water heaters have heating elements mounted in the tank. The input current in the water heater is 3.56 A and potential difference (Voltage) across it is 240 V. When the heater is switched on for 10 minutes, what could be the input power and electrical energy (in kWh) taken by water heater? If the efficiency of water heater is found to be 90 % due to energy loss, then how will you evaluate the practical output power generated by...
An electric heater has a Nichrome heating element with a resistance of 7 Ω at 20oC. When 118 V are applied, the electric current heats the Nichrome wire to 980oC. What is the operating wattage of this heater? (The temperature coefficient of resistivity of Nichrome is α = 0.0004 Co-1)
The heating element of a water heater in an apartment building has a maximum power output of 26 kW. Four residents of the building take showers at the same time, and each receives heated water at a volume flow rate of 15x10-5 m3/s. If the water going into the heater has a temperature of 10°C, what is the maximum possible temperature of the hot water that each showering resident receives?
The heating element of a water heater in an apartment building has a maximum power output of 27 kW. Four residents of the building take showers at the same time, and each receives heated water at a volume flow rate of 12x10-5 m3/s. If the water going into the heater has a temperature of 20°C, what is the maximum possible temperature of the hot water that each showering resident receives?