k**n
发帖数: 351 | 1 You have a 10V ideal voltage source in parallel with a 5Ω resistor.
What is the impedance? |
s******e
发帖数: 207 | |
i*****t
发帖数: 24265 | |
l*****e
发帖数: 594 | 4 Infinity?
The voltage drop will always be 10 V, but the current is zero thru the
parallel network.
【在 k**n 的大作中提到】
: You have a 10V ideal voltage source in parallel with a 5Ω resistor.
: What is the impedance?
|
l***g
发帖数: 1035 | 5 zero...
for none ideal voltage source, the less impedance the better or 'stronger' o
f the source.. so the extreme is a strong voltage source never collapse so i
t must have zero impedance.
【在 l*****e 的大作中提到】
: Infinity?
: The voltage drop will always be 10 V, but the current is zero thru the
: parallel network.
|
i*****t
发帖数: 24265 | |
k**n
发帖数: 351 | 7 The answer is ZERO.
It's a trick question. The amount of the voltage is irrelevant. The key
phrase is "ideal voltage source." The real purpose was to see if they knew
what an ideal voltage source was. |
i*****t
发帖数: 24265 | 8 You have a 10V ideal voltage source in parallel with a 0Ω resistor.
What is the impedance? |
k**n
发帖数: 351 | 9 haha, if there is anybody trying to build such circuit, he will be either
retarded or genius.
But you get the point --- when an employer ask such tricky questions, it is
to get an idea of how someone might approach a problem and less about if
they can pick up on key words or to test their knowledge. The problems are
far more open ended and may not have any 'correct' answer.
【在 i*****t 的大作中提到】
: You have a 10V ideal voltage source in parallel with a 0Ω resistor.
: What is the impedance?
|
l***g
发帖数: 1035 | 10 what's the current?
【在 i*****t 的大作中提到】
: You have a 10V ideal voltage source in parallel with a 0Ω resistor.
: What is the impedance?
|
|
|
i*****t
发帖数: 24265 | 11 其实答案不重要，重要的是面试的对方是否喜欢你这个人，就是回答符合对方目的和心
意。
例如
1 你回答：此题属于典型短路
考官：不喜欢你的会说你胡扯，而喜欢你的会说想的周全
2 你回答：无穷大，因为fuse或线路已经烧毁，或电源已经损坏或断路自保
考官：不喜欢你的会说你基础电压源都不懂，喜欢你的会说你经验丰富，思维强
3 你回答：电源内阻不为0，因为世界中，就算最理想电源短路时间也会有内阻，尤其
短路才能体现出内阻
考官：不喜欢你的会咬住理想电压源基本常识跳你毛病，喜欢你的会自然会同意点头，
同时提醒理想二字让你再次回答
【在 i*****t 的大作中提到】
: You have a 10V ideal voltage source in parallel with a 0Ω resistor.
: What is the impedance?
|
i*****t
发帖数: 24265 | 12 答案很多
1 无穷，按书本
2 有限，常规
3 0断路，常规
【在 l***g 的大作中提到】
: what's the current?
|
i*****t
发帖数: 24265 | 13 其实一般按照书本标准答案最保险和保守，如果想太多实际了，反而不好 |
k**n
发帖数: 351 | 14 You have a 10V ideal voltage source in parallel with a 5Ω resistor.
What is the impedance? |
s******e
发帖数: 207 | |
i*****t
发帖数: 24265 | |
l***g
发帖数: 1035 | 17 zero...
for none ideal voltage source, the less impedance the better or 'stronger' o
f the source.. so the extreme is a strong voltage source never collapse so i
t must have zero impedance.
【在 l*****e 的大作中提到】
: Infinity?
: The voltage drop will always be 10 V, but the current is zero thru the
: parallel network.
|
i*****t
发帖数: 24265 | 18 不知道对方想问啥，到底是电原内阻还是外部阻抗， |
k**n
发帖数: 351 | 19 The answer is ZERO.
It's a trick question. The amount of the voltage is irrelevant. The key
phrase is "ideal voltage source." The real purpose was to see if they knew
what an ideal voltage source was. |
i*****t
发帖数: 24265 | 20 You have a 10V ideal voltage source in parallel with a 0Ω resistor.
What is the impedance? |
|
|
k**n
发帖数: 351 | 21 haha, if there is anybody trying to build such circuit, he will be either
retarded or genius.
But you get the point --- when an employer ask such tricky questions, it is
to get an idea of how someone might approach a problem and less about if
they can pick up on key words or to test their knowledge. The problems are
far more open ended and may not have any 'correct' answer.
【在 i*****t 的大作中提到】
: You have a 10V ideal voltage source in parallel with a 0Ω resistor.
: What is the impedance?
|
l***g
发帖数: 1035 | 22 what's the current?
【在 i*****t 的大作中提到】
: You have a 10V ideal voltage source in parallel with a 0Ω resistor.
: What is the impedance?
|
i*****t
发帖数: 24265 | 23 其实答案不重要，重要的是面试的对方是否喜欢你这个人，就是回答符合对方目的和心
意。
例如
1 你回答：此题属于典型短路
考官：不喜欢你的会说你胡扯，而喜欢你的会说想的周全
2 你回答：无穷大，因为fuse或线路已经烧毁，或电源已经损坏或断路自保
考官：不喜欢你的会说你基础电压源都不懂，喜欢你的会说你经验丰富，思维强
3 你回答：电源内阻不为0，因为世界中，就算最理想电源短路时间也会有内阻，尤其
短路才能体现出内阻
考官：不喜欢你的会咬住理想电压源基本常识跳你毛病，喜欢你的会自然会同意点头，
同时提醒理想二字让你再次回答
【在 i*****t 的大作中提到】
: You have a 10V ideal voltage source in parallel with a 0Ω resistor.
: What is the impedance?
|
i*****t
发帖数: 24265 | 24 答案很多
1 无穷，按书本
2 有限，常规
3 0断路，常规
【在 l***g 的大作中提到】
: what's the current?
|
i*****t
发帖数: 24265 | 25 其实一般按照书本标准答案最保险和保守，如果想太多实际了，反而不好 |
