The half-wave rectifier is conducting during only half of each cycle, so the fundamental output frequency is 50 Hz, and there are loads of harmonics of 50 Hz. also present in the output.
The 50W lamp bulb has higher resistance. The resistance of a bulb is inversely proportional to the power it consumes, so a 50W bulb would have half the resistance of a 25W bulb.
20 of anything is larger than 5 of the same thing.
The upper and lower limits of audibility are somewhat different for each individual, and often even for the two ears of the same individual. The range of audible frequencies is usually considered to be from 20 Hz to 20,000 Hz. Frequencies lower than 20 or higher than 20,000 are inaudible to most people.
Hz stands for Hertz, which is a unit used to measure the frequency of alternating current (AC) in an electric system. It represents the number of cycles per second that the current alternates direction. Most electrical systems operate at either 50 Hz or 60 Hz depending on the region.
China is 220 volts at 50 Hz.
There is no inherent disadvantage of 50 Hz compared with 60 Hz, bearing in mind that systems that run at 50 Hz are designed to run at 50 Hz.
110V and 120V are essentially the same thing--don't worry about that. 50 Hz vs. 60 Hz is more important, for some devices. North America is 60 Hz; much of the rest of the world is 50 Hz.
The frequency is dependant upon what electrical grid that you are connecting the transformerto. If you are connected to a 50 Hz grid, the transformer will output a voltage at 50 Hz. The same thing with the 60 Hz grid, the transformer will output a voltage at 60 Hz.
10 Hz 10 Hz
It is a motor where the frequency of the AC voltage is 50 cycles per second. In U.S.A. 60 Hz is standard. 50 Hz would be overseas.
Generally speaking, an isolation transformer will work pretty much the same for 50 Hertz as for 60 Hertz. There will be some slight differences, but the frequency is low enough and the the range narrow enough that the transformer will just "do its thing" regardless. Note that the isolation transformer won't change the frequency of the input. An input of 50 Hz or 60 Hz will yield an output of 50 Hz and 60 Hz respectively. No change should be expected.
Yes
If a bulb has 50 Hz frequency and it's supply is 60 Hz frequency, it will still glow, despite the allowance of 10 HZ frequency.
Supplies are nearly always 50 Hz or 60 Hz. India's choice of 50 Hz probably goes back to the days when India took its technology infrastucture from the UK, so they probably imported the choice of 50 Hz at that time.
Voltage in India is 230V / 50 Hz
60 Hz in North America, 50 Hz in Europe.