Answer:
The final pressure is 3.16 torr
Solution:
As per the question:
The reduced pressure after drop in it, P' = 3 torr = 
At the end of pumping, temperature of air, 
After the rise in the air temperature, 
Now, we know the ideal gas eqn:
PV = mRT
So
(1)
where
P = Pressure
V = Volume
R = Rydberg's constant
T = Temperature
Using eqn (1):
Now, at constant volume the final pressure, P' is given by:
Answer:
It will be B
Explanation:
Since resisitors in series are added together, 1 + 1 + 1 would = 3kilo ohms. But with resistors in parallel would be (1/1+1/1)^-1. That would equal 0.5 Now you have two resistors in series for B, and because now that they are in series you add them together, so 0.5 + 1 = 1.5 kilo ohms which is what is needed.
Answer:
(b) for imparting motion to a mechanical part
Explanation:
a screw is a made of metal material usually hard metal it is mainly consist of a head at one end and a point at other end it also consist a shaft by virtue of which it can be change into other material there are many type of screw present translating type is one of them which is mostly use for imparting motion to a mechanical part
Answer:
The total design can be summarized as follows:
AC motor 55 hp, 750 rpm as a driver
Service factor 1.0
Design power 5 hp
No. 40 chain, 0.50 in pitch, 1 strands
17 teeth, 2.72 in pitch dia, 1 strand small sprocket
39 teeth, 7.46 in pitch dia, 1 strand large sprocket
1 strand of length 54 in
Center distance of 19.9 in
Actual Output speed of 326.9 rpm
Type B lubrication
Explanation:
