The virial equation for nitrogen gas is PV=RT(1+4.41×10-4P). Using the virial equation of state for nitrogen at 600 K, calculate
The fugacity of nitrogen at 200 atm and 600 K. The fugacity of nitrogen at 1 atm and 600 K. The change in the Gibbs free energy caused by a compression of 1 mole of nonideal nitrogen gas at 600 K from 1 to 200 atm. The change in the Gibbs free energy caused by a compression of 1 mole of ideal nitrogen gas at 600 K from 1 to 200 atm. What is the magnitude of the contribution to (c) caused by the nonideality of nitrogen?
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Answer and Explanation:
The DC motor has coils inside it which produces magnetic field inside the coil and due to thus magnetic field an emf is induced ,this induced emf is known as back emf. The back emf always acts against the applied voltage. It is represented by
The back emf of the DC motor is given by
Here N is speed of the motor ,P signifies the number of poles ,Z signifies the the total number of conductor and A is number of parallel paths
As from the relation we can see that back emf and speed ar dependent on each other it means back emf limits the speed of DC motor