Explanation:

We assume kinetic and potential energy changes are negligible and there is no work interactions.
a) Taking tank as a system, The energy balance can be define as


The mass balance could be written as

The final pressure in the tank could be defined as following

from standard steam table we know at

b)
From steam table at


initial mass in the tank could be define as

Final mass in the tank could be define as

The amount of steam that has entered the tank

c)
The internal energy in final state could be defined as following

The heat transfer could be defined as following

Copernicus's heliocentric theory stated that the planets orbited in perfectly circular orbits. In reality, they are shaped like ellipses (ovals).
<u>Order sequence of steps that are involved in the production of work by a four-stroke heat engine as follows:
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- Piston moves down, allowing fuel-air mixture to enter intake valve
- Piston moves up, compressing gas and causing gas to increase its temperature
- Combustion as gas is still compressed; increase in energy from combustion pushes piston down
- Piston moves up, pushing burned gases through exhaust valve: Spark plug fires, causing
Answer: Options D, A, C and B
<u>Explanation:
</u>
There are four basic steps of a four stroke engine- Intake, Combustion, Power and Exhaust. The first step is the intake of air plus fuel mixture in the combustion chamber. At this time, the piston moves down. Now when the chamber is closed, the spark plug ignites fire which expands the fuel gases.
The gases push down, piston and crankshaft rotates in this way. Once the gases the combustion is done, there is plenty of space in the chamber that makes the piston moves up. In this way a complete cycle is completed and the crankshaft moves. That’s the working of this four stroke engines.
Answer:
B) Decrease
Explanation:
Resistance offered due to inductor in any AC circuit is given as

here we know that
= angular frequency

now by ohm's law we know that

here we have

so current is inversely depends on the frequency of AC
so if frequency is increased then the current will decrease