Exercise RL Series Circuit

Exercise RL Series Circuit

Question 1

An Inductor of 100mH inductance is connected to 80Ω resistance in series and a 235V, 50Hz voltage source. Calculate:

a. Inductive reactance

b. The current flows through the inductor

Solution

Question 2

A series circuit consists of R=10Ω, L=10mH and an AC supply of 60V with f=100Hz. Calculate the current, the voltage across R, the voltage across L and the phase angle of current with respect to the supply voltage.

Solution

Question 3

A series circuits of resistance 2Ω, inductance 9.18mΩ and an AC supply V(t)= 12 sin (120πt). Calculate the

i. Current in the circuit,

ii. Voltage across resistance,

iii. Voltage across inductance

iv. Phase angle of current with respect to the supply voltage

Solution

Question 4

Based on Figure 1, determine the value of :-

Figure 1

i.  Impedance, Z

ii.  Current circuit, I

iii.  Reduction voltage of each component V_R and V_L

iv.  Phase angle                

Solution

Question 5

A pure inductor 100mH is connected in series with a resistor 20Ω and the voltage supply is 240V with frequency is 50Hz. Calculate;

i. the impedance

ii. the total current

iii. the active voltage ( in resistor )

iv. the reactive voltage (in inductor)

v. Draw the vector diagram

Solution

                                         

Question 6

An alternating voltage given by V=120sin377t v is applied across a coil of resistance 30Ω and inductance 120mH. Calculate;

i. the circuit impedance

ii. the current flowing

iii. the voltage across the resistance

iv. the voltage across the inductance

Solution