Consider a source of voltage v ( t ) = 10 2 sin ( 2 t ) V , with an internal resistance of 1800 Ω . A transformer that can be considered as ideal is used to couple a 50 Ω resistive load to the source. (a) Determine the transformer primary-to-secondary turns ratio required to ensure maxi mum power transfer by matching the load and source resistances. (b) Find the average power delivered to the load, assenting maximum power transfer.
Consider a source of voltage v ( t ) = 10 2 sin ( 2 t ) V , with an internal resistance of 1800 Ω . A transformer that can be considered as ideal is used to couple a 50 Ω resistive load to the source. (a) Determine the transformer primary-to-secondary turns ratio required to ensure maxi mum power transfer by matching the load and source resistances. (b) Find the average power delivered to the load, assenting maximum power transfer.
Solution Summary: The author states that the power transferred will be maximum when the value of load resistance is equal to the internal resistance of the source.
Consider a source of voltage
v
(
t
)
=
10
2
sin
(
2
t
)
V
, with an internal resistance of
1800
Ω
. A transformer that can be considered as ideal is used to couple a
50
Ω
resistive load to the source. (a) Determine the transformer primary-to-secondary turns ratio required to ensure maxi mum power transfer by matching the load and source resistances. (b) Find the average power delivered to the load, assenting maximum power transfer.
An ideal transformer is connected to a 110V(rms), 60HZ source. Line impedance on the
primary is 4+5i2 and on the secondary side is 1+2i2. A lmF capacitor is connected as load
on the secondary side. Transformer has 100 turns on the primary side and 50 turns on the
secondary side. Calculate:
(i) Primary and secondary current
(ii) Active and reactive power supplied by the source.
(iii)Power factor of the source.
Explaination please...Thank you for your help!
A 40 kVA 6000/240-V distribution transformer has an impedance referred to the primary of 15+j80Ω. The components of the excitation branch referred to the primary side are RC = 80 kΩ and XM =25 kΩ. The primary voltage is 5975 V and the load impedance is 2.2 + j0.8 Ω. What is the voltageregulation of the transformer?
A step-up transformer connected to a 180 V line is used to supply a hydrogen-gas discharge tube with 6.0 kV (rms). The tube dissipates 77 W of power.
(a) What is the ratio of the number of turns in the secondary winding to the number of turns in the primary winding?
N₂
Np
(b) What are the rms currents in the primary and secondary windings (in A)?
Ip =
Is =
A
A
(c) What is the effective resistance (in 22) seen by the 180 V source?
Ω
Chapter 3 Solutions
Power System Analysis and Design (MindTap Course List)
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