Water is lifted out of a well 30 m deep by a motor of power 1.00...
Water is lifted out of a well 30 m deep by a motor of power 1.00 hp. Assuming 90% efficiency, how many gallons of water are lifted in 1 minute? [Hint: one gallon of pure water has a mass of 3.8 kg.
Homework Answers
A water pump is required to lift 800 liters of water per minute from a well...
A water pump is required to lift 800 liters of water per minute from a well 10 meters deep to an elevated tank 5 meters above ground level. a) How much work does the pump do in a time of 1 min.? b) What is its power output in Hp? c) If its efficiency is 90%, what is its power input in Hp? d) How much work is lost if the pump operates for 1 hour
A pump is required to lift 780 kg of water per minute from a well 14.2 m deep and eject it with a speed of 19.0 m/s. A)...
A pump is required to lift 780 kg of water per minute from a
well 14.2 m deep and eject it with a speed of 19.0 m/s.
A) How much work is done per minute in lifting the
water?
B) How much work is done in giving the water the kinetic
energy it has when ejected?
C) What must be the power output of the pump?
Problem 6.85 6 of 6 Constants A pump is required to lift 780 kg...
3. You raise a bucket of water from the bottom of a deep well. If your...
3. You raise a bucket of water from the bottom of a deep well. If your power output is 120 W, and the mass of the bucket and the water in it is 3.50 kg, with what speed can you raise the bucket? Ignore the weight of the rope m/s
Do number 53 please The motor of a power saw is rated 72% efficient. If 1.8...
Do number 53 please
The motor of a power saw is rated 72% efficient. If 1.8 hp are required to cut a particular piece of lumber, what is the current drawn from a 120 V supply? What is the efficiency of a dryer motor that delivers 0.81 hp when the input current and voltage4 are 4 a and 220 v, respectively? A stero system drawn 1.8 A at 120 V, The audio output power is 50 W. a. How much...
3. An electric motor draws 2238 W and 12 A when operating on a 240 V source. Determine the (a) Po...
3. An electric motor draws 2238 W and 12 A when operating on a 240 V source. Determine the (a) Power factor of the motor. (b) Apparent power input to motor. (c) True power input to motor. (d) Horsepower output of the motor if it is 75% efficient. 4 The follwing s found on the nameplate of a motor. 3 hp 60 Hz 1 phase 120/240 V 34/17 A 1,740 RPM irthe power factor of the motor is 0.30, what...
1.A 4.50 hp water pump is pumping water from a well 7.50 m below ground. How...
1.A 4.50 hp water pump is pumping water from a well 7.50 m below ground. How many liters of water can it lift to the ground in 1 hour? 1 L of water has a mass of exactly 1 kg.
Question 4 A steam power plant equipped with an open feed water heater as well as...
Question 4 A steam power plant equipped with an open feed water heater as well as reheat arrangement, as shown in figure 1, supplies 50 kg/s of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a part of steam is extracted at 7 bar and the remainder of the steam is reheated to 350°C in a reheater and then expanded in L.P. turbine down to 0.035 bar. The isentropic efficiency of both turbines is 0.85: A....
A steam power plant equipped with an open feed water heater as well as reheat arrangement,...
A steam power plant equipped with an open feed water heater as
well as reheat arrangement, as shown in figure 1, supplies 50 kg/s
of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a
part of steam is extracted at 7 bar and the remainder of the steam
is reheated to 350°C in a reheater and then expanded in L.P.
turbine down to 0.035 bar. The isentropic efficiency of both
turbines is 0.85:
(a) Plot the...
A steam power plant equipped with an open feed water heater as well as reheat arrangement,...
A steam power plant equipped with an open feed water heater as well as reheat arrangement, as shown in figure 1, supplies 50 kg/s of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a part of steam is extracted at 7 bar and the remainder of the steam is reheated to 350°C in a reheater and then expanded in L.P. turbine down to 0.035 bar. The isentropic efficiency of both turbines is 0.85: (a) Plot the...
A steam power plant equipped with an open feed water heater as well as reheat arrangement,...
A steam power plant equipped with an open feed water heater as well as reheat arrangement, as shown in figure 1, supplies 50 kg/s of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a part of steam is extracted at 7 bar and the remainder of the steam is reheated to 350°C in a reheater and then expanded in L.P. turbine down to 0.035 bar. The isentropic efficiency of both turbines is 0.85: (a) Plot the...
A pump is required to lift 780 kg of water per minute from a
well 14.2 m deep and eject it with a speed of 19.0 m/s.
A) How much work is done per minute in lifting the
water?
B) How much work is done in giving the water the kinetic
energy it has when ejected?
C) What must be the power output of the pump?
Problem 6.85 6 of 6 Constants A pump is required to lift 780 kg...
3. You raise a bucket of water from the bottom of a deep well. If your power output is 120 W, and the mass of the bucket and the water in it is 3.50 kg, with what speed can you raise the bucket? Ignore the weight of the rope m/s
Do number 53 please
The motor of a power saw is rated 72% efficient. If 1.8 hp are required to cut a particular piece of lumber, what is the current drawn from a 120 V supply? What is the efficiency of a dryer motor that delivers 0.81 hp when the input current and voltage4 are 4 a and 220 v, respectively? A stero system drawn 1.8 A at 120 V, The audio output power is 50 W. a. How much...
3. An electric motor draws 2238 W and 12 A when operating on a 240 V source. Determine the (a) Power factor of the motor. (b) Apparent power input to motor. (c) True power input to motor. (d) Horsepower output of the motor if it is 75% efficient. 4 The follwing s found on the nameplate of a motor. 3 hp 60 Hz 1 phase 120/240 V 34/17 A 1,740 RPM irthe power factor of the motor is 0.30, what...
Question 4 A steam power plant equipped with an open feed water heater as well as reheat arrangement, as shown in figure 1, supplies 50 kg/s of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a part of steam is extracted at 7 bar and the remainder of the steam is reheated to 350°C in a reheater and then expanded in L.P. turbine down to 0.035 bar. The isentropic efficiency of both turbines is 0.85: A....
A steam power plant equipped with an open feed water heater as
well as reheat arrangement, as shown in figure 1, supplies 50 kg/s
of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a
part of steam is extracted at 7 bar and the remainder of the steam
is reheated to 350°C in a reheater and then expanded in L.P.
turbine down to 0.035 bar. The isentropic efficiency of both
turbines is 0.85:
(a) Plot the...
A steam power plant equipped with an open feed water heater as well as reheat arrangement, as shown in figure 1, supplies 50 kg/s of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a part of steam is extracted at 7 bar and the remainder of the steam is reheated to 350°C in a reheater and then expanded in L.P. turbine down to 0.035 bar. The isentropic efficiency of both turbines is 0.85: (a) Plot the...
A steam power plant equipped with an open feed water heater as well as reheat arrangement, as shown in figure 1, supplies 50 kg/s of steam at 80 bar 470°C to the H.P. turbine. For feed heating, a part of steam is extracted at 7 bar and the remainder of the steam is reheated to 350°C in a reheater and then expanded in L.P. turbine down to 0.035 bar. The isentropic efficiency of both turbines is 0.85: (a) Plot the...
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