yes
A 1000 watt generator cannot run a 1500 watt ceramic heater without having problems.
Most hair dryers are rated at least 800 watts to as much as 1875 watts. Given that, a 500 watt generator will NOT run a hair dryer. You would need at least a 2000 watt generator, just be be on the safe side.
The average size water tank is 4500 watts. The generator's supply will be large enough to operate the water tank. Larger tanks over 5000 watts will not heat correctly.
A 7000 watt generator us typically intended for 2 - 15 or 20 amp circuits at 120 volts or 1 - 30 amp circuit at 240 volts. When you say, "power a house," if you mean the whole house the answer is, No. You would need a generator capable of supplying a continuous 24000 watts or more to do that. But a 7000 watt generator is a nice one for powering some lights and your gas furnace blower during a power outage when properly connected. I do not know what the wattage is of an electric furnace to know if it can run one of those.
Yes, a 2800 watt generator should be able to run a 550 watt electric cement mixer motor. The generator's wattage is more than enough to power the motor with some extra capacity for other devices. Be sure to check the starting wattage of the motor as well to ensure the generator can handle the initial surge of power needed.
you need to get a lot of horses
If the 1600 represents 1600 watts like most generator numbers do, then the generator can deliver enough power to run a 1600 watt load connected to it.
A 900 watt generator can typically run small appliances such as a refrigerator, fans, lights, computer, and some power tools. It may not be able to power larger appliances like air conditioners or washing machines. It's important to check the specific power requirements of each device before connecting them to the generator.
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It depends on the rated output of the generator. A 2500 watt pressure washer should be powered by a generator with a rated output of at least 3000 watts to allow for start-up surges and ensure continuous operation without overloading the generator. Always check the manufacturer's recommendations for power requirements before connecting any appliance to a generator.
A 300 watt audio system means it has a peak power of 300 watts but the average power might be only a fraction of that, perhaps 5-10 watts. So it might run off a car battery, with an inverter to supply the correct voltage if needed. <<>> A 300 watt public address sound system will operate very nicely from as small as a 500 watt AC generator. A 1000 watt generator will give you more capacity if there are other devices that need powering.