How can I tell if the source is AC or DC

  • Thread starter Thread starter Jason03
  • Start date Start date
  • Tags Tags
    Ac Dc Source
AI Thread Summary
To determine if a source is AC or DC, consider the nature of the source; a 24 V battery indicates a DC source, as batteries are typically made from electrochemical cells. The transformer mentioned has a turns ratio of 8, but since the input is DC, the secondary output voltage is zero volts. The phrasing of the question suggests it was designed to mislead, as referring to an AC source as a "battery" is unusual. The conclusion is that a battery cannot produce an output voltage when connected to a transformer, confirming its DC nature. Understanding these distinctions is crucial for interpreting electrical sources correctly.
Jason03
Messages
161
Reaction score
0
A 24 V battery is connected to the primary input of a transformer having a turns ratio of 8. The voltage seen at the secondary output is:


Now how can I tell if the source is AC or DC from this question?
 
Physics news on Phys.org


Good question. If the battery is made from electrochemical cells, it's DC. And I've never heard of an AC source referred to as a "battery". If they meant AC, it is a really weird way to word the question.
 


It was a bit of a trick question from my teacher...luckily I got it right...the answer is zero volts since a battery would be considered a DC source...therefore no output voltage
 
Thread 'Have I solved this structural engineering equation correctly?'

Thread 'Have I solved this structural engineering equation correctly?'

Hi all, I have a structural engineering book from 1979. I am trying to follow it as best as I can. I have come to a formula that calculates the rotations in radians at the rigid joint that requires an iterative procedure. This equation comes in the form of: $$ x_i = \frac {Q_ih_i + Q_{i+1}h_{i+1}}{4K} + \frac {C}{K}x_{i-1} + \frac {C}{K}x_{i+1} $$ Where: ## Q ## is the horizontal storey shear ## h ## is the storey height ## K = (6G_i + C_i + C_{i+1}) ## ## G = \frac {I_g}{h} ## ## C...
View full post »

Similar threads

Engineering How to deal with dc source on ac circuits?
Replies
7
Views
3K
Engineering DC source rather than a clamper circuit?
Replies
6
Views
2K
Engineering Understanding the output waveform and using LTSpice
Replies
1
Views
2K
Engineering Control block diagram's transfer function
Replies
8
Views
2K
Investigating the Effects of a Common Emitter Amplifier
Replies
7
Views
2K
Superposition with AC voltage source and DC current source
Replies
16
Views
5K
Time domain equation for RC circuit with AC input
Replies
4
Views
2K
Engineering Synchronous motor coupled to a DC Compound Motor Problem
Replies
2
Views
2K
Engineering Calculating the DC value of the output voltage for a full wave rectifier
Replies
8
Views
7K
Engineering Separately excited DC motor problem (Electrical Engineering)
Replies
3
Views
2K

Hot Threads

Recent Insights

Back
Top