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The synchronous speed of a single-phase motor is determined by the formula ( N_s = \frac{120 \times f}{P} ), where ( N_s ) is the synchronous speed in RPM, ( f ) is the frequency of the supply, and ( P ) is the number of poles. Therefore, if the applied frequency remains constant, the synchronous speed will not change significantly with variations in the applied voltage or current. However, if the supply frequency changes, the synchronous speed will change accordingly. In practice, variations in load can cause the actual speed to deviate from the synchronous speed, but this is not a change in synchronous speed itself.
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What is the synchronous speed of a four-pole motor connected to 50Hz?
The synchronous speed of a motor can be calculated using the formula: ( \text{Synchronous Speed} (N_s) = \frac{120 \times f}{P} ), where ( f ) is the frequency in hertz and ( P ) is the number of poles. For a four-pole motor connected to a 50Hz supply, the synchronous speed is ( N_s = \frac{120 \times 50}{4} = 1500 ) RPM. Thus, the synchronous speed of the motor is 1500 revolutions per minute.
What are the stator of poles?
In an Induction motor synchronous speed is inversely proportion to No. of poles if we increase No. of poles speed will decrease they are derived through formula as under P= 120*f/Ns Where P= No. of Poles f= Rated frequency Ns= Synchronous speed of flux.
What is General formula for calculating compressive strength of concrete?
Load divided by area of load applied (Load per unit area)
How many watts of power are consumed in a circuit with an applied voltage of 60 volts and a load of 150 ohms?
The formula for this question is I=P/E Where I = Current P = Watts E = Volts Therefore applying this formula: I = 1500 / 120 = 12.5
How do you test leakage on equipment?
by measuring the insulation resistance then by usig the formula for finding leakage current leakage current =voltage applied /resistance measured by megger.
What is the synchronous speed of a four-pole motor connected to 50Hz?
The synchronous speed of a motor can be calculated using the formula: ( \text{Synchronous Speed} (N_s) = \frac{120 \times f}{P} ), where ( f ) is the frequency in hertz and ( P ) is the number of poles. For a four-pole motor connected to a 50Hz supply, the synchronous speed is ( N_s = \frac{120 \times 50}{4} = 1500 ) RPM. Thus, the synchronous speed of the motor is 1500 revolutions per minute.
What are the stator of poles?
In an Induction motor synchronous speed is inversely proportion to No. of poles if we increase No. of poles speed will decrease they are derived through formula as under P= 120*f/Ns Where P= No. of Poles f= Rated frequency Ns= Synchronous speed of flux.
How do you calculate the output torque and speed when s equals 0?
When the slip value (s) equals 0, it means that the rotor speed is equal to the synchronous speed of the motor. In this case, the output torque can be calculated using the formula T = (P * 60) / (2 * π * Ns), where T is the torque, P is the number of poles, and Ns is the synchronous speed. The speed of the motor is the synchronous speed in this condition.
What is the formula for excitation voltage?
E=Vt + Ia jXS Where E excitation voltage Vt Terminal voltage Stator Current Ia Xs synchronous Reactance
What is the formula for measuring the rate of work?
The formula for measuring the rate of work is: Work = Force × Distance ÷ Time. This formula takes into account the force applied, the distance over which the force is applied, and the time taken to complete the work.
What is the formula for calculating the compression of a spring?
The formula for calculating the compression of a spring is: Compression (Force applied to the spring) / (Spring constant)
What is the formula to calculate the total work done in a system?
The formula to calculate the total work done in a system is W Fd, where W represents work, F is the force applied, and d is the distance over which the force is applied.
How do you find effort applied on an object?
Effort applied on an object can be found using the formula: Effort = Force x Distance. This formula considers both the amount of force exerted on the object and the distance over which the force is applied. It provides a way to quantify the work or energy put into moving or lifting the object.
How law of constant proportion applied in experiment empirical formula of a compound?
percentage of mg
What is the formula for finding the moment?
The moment (or torque) is calculated using the formula: ( M = F \times d ), where ( M ) is the moment, ( F ) is the force applied, and ( d ) is the distance from the pivot point to the point where the force is applied, measured perpendicularly. If the force is not applied perpendicularly, the formula can be adjusted to ( M = F \times d \times \sin(\theta) ), where ( \theta ) is the angle between the force vector and the lever arm.
How do you calculate the moment force about the pivot?
To calculate the moment force about a pivot, you multiply the force applied by its distance from the pivot. The formula is: Moment force = Force × Distance. Make sure to consider the direction of the force and apply the right-hand rule for the vector direction.
What is the major scale chord formula and how can it be applied in music theory?
The major scale chord formula is 1-3-5, which means you take the 1st, 3rd, and 5th notes of a major scale to build a chord. This formula can be applied in music theory to create harmonious chords that are commonly used in music compositions.
