A continuous flow water heater (geyser) has an electrical power rating = 2 k W and efficiently of conversion of electrical power into heat = 80%. If water is flowing through the device at the rate of 100 cc/sec, and the inlet temperature is 10 °C, the outlet temperature will be

A 2100 W continuous flow geyser (instant geyser) has water inlet temperature = 10°C while the water flows out at the rate of 20 g/sec. The outlet temperature of water must be about

A 2100 W continuous flow geyser (instant geyser) has water inlet temperature = 10°C while the water flows out at the rate of 20 g/sec. The outlet temperature of water must be about

Write the relation between electric power (W ) of a device with potential differnece (Volt) across it and current ( amp ) flowing through it.

Write the relation between electric power (W ) of a device with potential differnece (Volt) across it and current ( amp ) flowing through it.

An electric iron has a rating of 750 W, 220 V. Calculate the current flowing through it .

An electrically heated coil is immersed in a calorimeter containing 360 g of water at 10^@C . The coil consumes energy at the rate of 90 W. The water equivalent of calorimeter and coil is 40 g. The temperature of water after 10 min is

An electrically heated coil is immersed in a calorimeter containing 360 g of water at 10^@C . The coil consumes energy at the rate of 90 W. The water equivalent of calorimeter and coil is 40 g. The temperature of water after 10 min is

An electrically heated coil is immersed in a calorimeter containing 360 g of water at 10^@C . The coil consumes energy at the rate of 90 W. The water equivalent of calorimeter and coil is 40 g. The temperature of water after 10 min is

A cylindrical rod of heat capacity 120 J//K in a room temperature 27^(@)C is heated internally by heater of power 250W , The steady state temperature attained by the rod is 37^(@)C . Fin the following: (a) The initial rate of increse in temperature (b) The steady state rate of emission of radiant heat. If the heater is switched off, find (c) The initial rate of decrease is temperature (d) The rate of decrease in temperature of the cylinder when its temperature falls to 31^(@)C and (e) The maximum amount of heat lost by the cylinder