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QUESTION 4 The power transmitted through the shaft of a car is 120 kW and the...
It is required to design a square key for fixing gear on a shaft of 50 mm diameter. 14 KW power a...
It is required to design a square key for fixing gear on a shaft of 50 mm diameter. 14 KW power at 317 rps is transmitted from the shaft to the gear. Determine the applied Torque in N-m It is required to design a key for fixing gear on a shaft of 50 mm diameter. It is required that 15 kW power at 720 rpm is to be transmitted from the shaft to the gear. The yield strength of the...
Q2. Figure Q2 shows a shaft which transmits a power of 48 kW through flat belts. Pulley A is driven by a motor which rotates at 3000 rpm. The diameter of pulley A is 400 mm and that of pulley B is 25...
Q2. Figure Q2 shows a shaft which transmits a power of 48 kW through flat belts. Pulley A is driven by a motor which rotates at 3000 rpm. The diameter of pulley A is 400 mm and that of pulley B is 250 mm. The thickness of the belts is 4 mm and they are made of a material with density of 1100 kg/m3. Assume no sliding between pulleys and belts a) Calculate the speed of the belt and the...
QUESTION 9 A line shaft rotating at speed to transmit power through torque equal to 911...
QUESTION 9 A line shaft rotating at speed to transmit power through torque equal to 911 N.m. The shaft is made of mild steel with an allowable shear stress of 68 MPa. Neglecting the effect of bending moment on the shaft. Compute the diameter of the shaft (mm)? QUESTION 11 A gear carried by a shaft exerts a force on the shaft. The torque transmitted by the gear is equal to 377,890 N.mm. The Pitch diameter of the gear is...
QUESTION 1 A) (10 marks) A 10 kW, 250 V DC self-excited shunt generator, with an...
QUESTION 1 A) (10 marks) A 10 kW, 250 V DC self-excited shunt generator, with an armature resistance of 0.1 ohm, is delivering 80 % of rated power to the mains at rated voltage when being run at 1000 r.p.m. (revolutions per minute). The field circuit resistance is 220 ohms. The brush contact drop is 0.5 V and rotational (mechanical) losses are 750 W Calculate The induced voltage The electromagnetic torque developed The shaft torque The overall efficiency B) (15...
Prob #5: The turbine develops 150 kW of power, which is transmitted to the gears such...
Prob #5: The turbine develops 150 kW of power, which is transmitted to the gears such that C and D each receive 50%. The steel shaft has a 100 mm diameter, the rotation is ω = 700 rev/min., and the shear modulus is Gst-75 GPa. The journal bearing at E allows the shaft to turn freely about its axis rn 17· The torque delivered by gear D is A) 93.8 B)512 C)895 D1025 E) 1195 F) 1790 The torque in...
Question 2 (a) A six-cylinder four-stroke internal combustion engine, running at 2,200 rpm, outputs 120 kW...
Question 2 (a) A six-cylinder four-stroke internal combustion engine, running at 2,200 rpm, outputs 120 kW of brake power. The stroke is equal to the bore. The brake mean effective pressure is 5.5 MPa. Calculate the torque, total displacement volume, stroke and bore. [6] (b) In a car, the engine described in (a) above drives the wheels through the multispeed gearbox shown in Figure Q2. When the engine runs at 2,200 rpm, and the gears are selected as shown in...
Adrive shaft of a car transmits 100Kw of power while rotating at 900 RPM. Compute the...
Adrive shaft of a car transmits 100Kw of power while rotating at 900 RPM. Compute the torque of the shaft. P = 100,000W and n=900 (don't forget to convert to rads). O 1000 N*m 1058 N'm O 1500 N*m 2000 N'm 900 Nm
4. A torque of 150 N*m is applied to a shaft rotating at 2000 rev/min a....
4. A torque of 150 N*m is applied to a shaft rotating at 2000 rev/min a. Find the power transmitted in kilowatts b. An electrical potential of 115 V is impressed on a resistor such that a current of 9 A passes through the resistor for a period of 5 min. Find the electrical work, in KJ, and instantaneous power, in kilowatts.
Image: Question: ron los windage and friction loss mechanical power shaft active power to stator P....
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Question:
ron los windage and friction loss mechanical power shaft active power to stator P. active power supplied to rotor TO A 6 pole, 3 phase induction motor is connected to a 60Hz 3 phase AC Source. At the full lead them has the following losses: copper losses in the stator, 1.2 kw. iron losses in the stator: 0.5 kW, copper losses in the rotor: IkW, windage and friction losses: 1.5 kW. If the motor draws a total of...
Question 9 (9] The shaft shown in fiqure Q9 receives 80 kW from a water turbine through a chain sprocket at point C. Th...
Question 9 (9] The shaft shown in fiqure Q9 receives 80 kW from a water turbine through a chain sprocket at point C. The gear pair at E delivers 60 kW to an electrical generator. The V-belt sheave at A de- livers 20 kW to a bucket elevator that carries grain to an elevated hopper. The shaft rotates at 1700 rpm. The sprocket, sheave and gear are located axially by retaining rings. The sheave and gear are keyed with sled...
It is required to design a square key for fixing gear on a shaft of 50 mm diameter. 14 KW power at 317 rps is transmitted from the shaft to the gear. Determine the applied Torque in N-m It is required to design a key for fixing gear on a shaft of 50 mm diameter. It is required that 15 kW power at 720 rpm is to be transmitted from the shaft to the gear. The yield strength of the...
Q2. Figure Q2 shows a shaft which transmits a power of 48 kW through flat belts. Pulley A is driven by a motor which rotates at 3000 rpm. The diameter of pulley A is 400 mm and that of pulley B is 250 mm. The thickness of the belts is 4 mm and they are made of a material with density of 1100 kg/m3. Assume no sliding between pulleys and belts a) Calculate the speed of the belt and the...
QUESTION 9 A line shaft rotating at speed to transmit power through torque equal to 911 N.m. The shaft is made of mild steel with an allowable shear stress of 68 MPa. Neglecting the effect of bending moment on the shaft. Compute the diameter of the shaft (mm)? QUESTION 11 A gear carried by a shaft exerts a force on the shaft. The torque transmitted by the gear is equal to 377,890 N.mm. The Pitch diameter of the gear is...
QUESTION 1 A) (10 marks) A 10 kW, 250 V DC self-excited shunt generator, with an armature resistance of 0.1 ohm, is delivering 80 % of rated power to the mains at rated voltage when being run at 1000 r.p.m. (revolutions per minute). The field circuit resistance is 220 ohms. The brush contact drop is 0.5 V and rotational (mechanical) losses are 750 W Calculate The induced voltage The electromagnetic torque developed The shaft torque The overall efficiency B) (15...
Prob #5: The turbine develops 150 kW of power, which is transmitted to the gears such that C and D each receive 50%. The steel shaft has a 100 mm diameter, the rotation is ω = 700 rev/min., and the shear modulus is Gst-75 GPa. The journal bearing at E allows the shaft to turn freely about its axis rn 17· The torque delivered by gear D is A) 93.8 B)512 C)895 D1025 E) 1195 F) 1790 The torque in...
Question 2 (a) A six-cylinder four-stroke internal combustion engine, running at 2,200 rpm, outputs 120 kW of brake power. The stroke is equal to the bore. The brake mean effective pressure is 5.5 MPa. Calculate the torque, total displacement volume, stroke and bore. [6] (b) In a car, the engine described in (a) above drives the wheels through the multispeed gearbox shown in Figure Q2. When the engine runs at 2,200 rpm, and the gears are selected as shown in...
Adrive shaft of a car transmits 100Kw of power while rotating at 900 RPM. Compute the torque of the shaft. P = 100,000W and n=900 (don't forget to convert to rads). O 1000 N*m 1058 N'm O 1500 N*m 2000 N'm 900 Nm
4. A torque of 150 N*m is applied to a shaft rotating at 2000 rev/min a. Find the power transmitted in kilowatts b. An electrical potential of 115 V is impressed on a resistor such that a current of 9 A passes through the resistor for a period of 5 min. Find the electrical work, in KJ, and instantaneous power, in kilowatts.
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Question:
ron los windage and friction loss mechanical power shaft active power to stator P. active power supplied to rotor TO A 6 pole, 3 phase induction motor is connected to a 60Hz 3 phase AC Source. At the full lead them has the following losses: copper losses in the stator, 1.2 kw. iron losses in the stator: 0.5 kW, copper losses in the rotor: IkW, windage and friction losses: 1.5 kW. If the motor draws a total of...
Question 9 (9] The shaft shown in fiqure Q9 receives 80 kW from a water turbine through a chain sprocket at point C. The gear pair at E delivers 60 kW to an electrical generator. The V-belt sheave at A de- livers 20 kW to a bucket elevator that carries grain to an elevated hopper. The shaft rotates at 1700 rpm. The sprocket, sheave and gear are located axially by retaining rings. The sheave and gear are keyed with sled...
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