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10. Determine the rotation speed of shaft (2). The motor at A supplies 50 kW at...
Problem 2: 50pts To monitor the rotation speed of a shaft, a generator motor attachment has...
Problem 2: 50pts To monitor the rotation speed of a shaft, a generator motor attachment has been suggested. Here a permanent magnet motor, shown below, is directly attached to the shaft. Stator (magnet) Armature winding Bearing Power supply Brush Commutator Rotor A voltmeter is connected to the power supply connection and is calibrated for various voltage-rpm values. a) Determine the governing equations for this system. (use the motor rotation as the input and the voltage generated as the output) b)...
Figure Q3 (a) shows a solid 40 mm diameter steel shaft which is supported by smooth bearings at B and D
Figure Q3 (a) shows a solid 40 mm diameter steel shaft which is supported by smooth bearings at B and D. It is coupled to a motor at C, which delivers 6 kW of power to the shaft while it is turning at 50 Hz. The modulus of rigidity of steel is 80 GPa. The shaft is free to turn in its support bearings at B and D. If gears A and E consume powers of 2 kW and 4...
The motor shown in the figure supplies 14.0 kW at 1880 rpm at A. Shafts (1)...
The motor shown in the figure supplies 14.0 kW at 1880 rpm at
A. Shafts (1) and (2) are each solid 26 mm diameter
shafts. Shaft (1) is made of an aluminum alloy [?G=26??GPa], and
shaft (2) is made of bronze [?G=45??GPa]. The shaft lengths are
L1=3.1m and L2=2.7m, respectively. Gear B has 55 teeth,
and gear C has 99 teeth. The bearings shown permit free
rotation of the shafts. Determine:
(a) the maximum shear stress produced in shafts
(1)...
3. A 33-kW motor, using a set of gears, drives a shaft at a speed n,...
3. A 33-kW motor, using a set of gears, drives a shaft at a speed n, as illustredted in Fig. P3, with a safety factor = 2.2 what will be the total angle of twist between A and B. Given: G = 82 GPa, Typ = 210 MPa, n = 1500 rpm? (a) 16.64°, (b) 18.64°, (c) 14.64°9, (d) 10.64", (e) none of above 2 m 5 m A с C B Motor 8 kW off 25 kW off 33...
3. A 33-KW motor, using a set of gears, drives a shaft at a speed n,...
3. A 33-KW motor, using a set of gears, drives a shaft at a speed n, as illustredted in Fig. P3, with a safety factor = 2.2 what will be the total angle of twist between A and B. Given: G = 82 GPa, Typ = 210 MPa, n = 1500 rpm? (a) 16.64", (b) 18.64", (c) 14.64°9, (d) 10.64", (e) none of above -2m- 5 m с Motor 25 kW 8 kW off off 33 kW Fig. P3
44. The direction of rotation of an induction motor depends on a. the frequency of the...
44. The direction of rotation of an induction motor depends on a. the frequency of the input voltage b. the strength of the magnetic field set up c. the phase sequence of the input supply lines and order in which they are connected to the stator windings d. whether the windings are connected in delta or star determines the speed of the rotating magnetic field a. the number of poles in the motor b. the frequency of the supply d...
1 a Determine the synchronous speed of a motor that has a frequency of 60Hz and...
1 a Determine the synchronous speed of a motor that has a frequency of 60Hz and 12 poles. The synchronous speed of a 3-phase, 4-pole induction motor is 60 rev/s. Determine the frequency of the supply to the stator windings. The synchronous speed of a 3-phase induction motor is 25 rev/s and the frequency of the supply to the stator is 50 Hz. Calculate the equivalent number of pairs of poles of the motor. A 6-pole, 3-phase induction motor is...
4. A 50-kW, 460-V, 50-Hz, two-pole induction motor has a slip of 5 percent when operating...
4. A 50-kW, 460-V, 50-Hz, two-pole induction motor has a slip of 5 percent when operating a full-load conditions. At full-load conditions, the friction and windage losses are 700 W, and the core losses are 600 W. Find the following values for full-load conditions: (10 pts.) (a) The shaft speed in rpm (b) The output power in horse power (c) The load torque in lb-ft (d) The induced torque in lb-ft (e) The rotor frequency in hertz
Alt h. 10- The motor delivers 40 hp to the 304 stainless steel shaft while it...
Alt h. 10- The motor delivers 40 hp to the 304 stainless steel shaft while it rotates at 20 Hz. The shaft is supported on smooth bearings at A and B, which allow free rotation of the shaft. The gears C and D fixed to the shaft remove 25 hp and 15 hp, respectively. Determine the diameter of the shaft to the nearest 1/8 in. if the allowable shear stress is 8 ksi and the allowable angle of twist of...
Problem 2: A solid steel shaft ABC of 50 mm diameter is driven at A by...
Problem 2: A solid steel shaft ABC of 50 mm diameter is driven at A by a motor that transmits 50 kW to the shaft at 40 rpm. The gears at B and C drive require 35 and 15 kW, respectively. Calculate the maximum shear stress in the shaft and the angle of twist between A and C. G 80 GPa 10 marks Motor 50 mm
Problem 2: 50pts To monitor the rotation speed of a shaft, a generator motor attachment has been suggested. Here a permanent magnet motor, shown below, is directly attached to the shaft. Stator (magnet) Armature winding Bearing Power supply Brush Commutator Rotor A voltmeter is connected to the power supply connection and is calibrated for various voltage-rpm values. a) Determine the governing equations for this system. (use the motor rotation as the input and the voltage generated as the output) b)...
The motor shown in the figure supplies 14.0 kW at 1880 rpm at
A. Shafts (1) and (2) are each solid 26 mm diameter
shafts. Shaft (1) is made of an aluminum alloy [?G=26??GPa], and
shaft (2) is made of bronze [?G=45??GPa]. The shaft lengths are
L1=3.1m and L2=2.7m, respectively. Gear B has 55 teeth,
and gear C has 99 teeth. The bearings shown permit free
rotation of the shafts. Determine:
(a) the maximum shear stress produced in shafts
(1)...
3. A 33-kW motor, using a set of gears, drives a shaft at a speed n, as illustredted in Fig. P3, with a safety factor = 2.2 what will be the total angle of twist between A and B. Given: G = 82 GPa, Typ = 210 MPa, n = 1500 rpm? (a) 16.64°, (b) 18.64°, (c) 14.64°9, (d) 10.64", (e) none of above 2 m 5 m A с C B Motor 8 kW off 25 kW off 33...
3. A 33-KW motor, using a set of gears, drives a shaft at a speed n, as illustredted in Fig. P3, with a safety factor = 2.2 what will be the total angle of twist between A and B. Given: G = 82 GPa, Typ = 210 MPa, n = 1500 rpm? (a) 16.64", (b) 18.64", (c) 14.64°9, (d) 10.64", (e) none of above -2m- 5 m с Motor 25 kW 8 kW off off 33 kW Fig. P3
44. The direction of rotation of an induction motor depends on a. the frequency of the input voltage b. the strength of the magnetic field set up c. the phase sequence of the input supply lines and order in which they are connected to the stator windings d. whether the windings are connected in delta or star determines the speed of the rotating magnetic field a. the number of poles in the motor b. the frequency of the supply d...
1 a Determine the synchronous speed of a motor that has a frequency of 60Hz and 12 poles. The synchronous speed of a 3-phase, 4-pole induction motor is 60 rev/s. Determine the frequency of the supply to the stator windings. The synchronous speed of a 3-phase induction motor is 25 rev/s and the frequency of the supply to the stator is 50 Hz. Calculate the equivalent number of pairs of poles of the motor. A 6-pole, 3-phase induction motor is...
4. A 50-kW, 460-V, 50-Hz, two-pole induction motor has a slip of 5 percent when operating a full-load conditions. At full-load conditions, the friction and windage losses are 700 W, and the core losses are 600 W. Find the following values for full-load conditions: (10 pts.) (a) The shaft speed in rpm (b) The output power in horse power (c) The load torque in lb-ft (d) The induced torque in lb-ft (e) The rotor frequency in hertz
Alt h. 10- The motor delivers 40 hp to the 304 stainless steel shaft while it rotates at 20 Hz. The shaft is supported on smooth bearings at A and B, which allow free rotation of the shaft. The gears C and D fixed to the shaft remove 25 hp and 15 hp, respectively. Determine the diameter of the shaft to the nearest 1/8 in. if the allowable shear stress is 8 ksi and the allowable angle of twist of...
Problem 2: A solid steel shaft ABC of 50 mm diameter is driven at A by a motor that transmits 50 kW to the shaft at 40 rpm. The gears at B and C drive require 35 and 15 kW, respectively. Calculate the maximum shear stress in the shaft and the angle of twist between A and C. G 80 GPa 10 marks Motor 50 mm
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