Given:

frequency, f = 60.0 Hz
frequency, f' = 45.0 Hz

Solution:
To calculate max current in inductor,  :
:
At f = 60.0 Hz


L = 0.1326 H
Now, reactance  at f' = 45.0 Hz:
 at f' = 45.0 Hz:


Now,  is given by:
 is given by:
  
 
 
 
Therefore,  max current in the inductor,  = 2.13 A
 = 2.13 A 
 
        
             
        
        
        
Answer:
a. true
Explanation:
Firstly, we need to understand what takes places during the compression process in a quasi-equilibrium process. A quasi-equilibrium process is a process in during which the system remains very close to a state of equilibrium at all times.  When a compression process is quasi-equilibrium, the work done during the compression is returned to the surroundings during expansion, no exchange of heat, and then the system and the surroundings return to their initial states. Thus a reversible process.
While for a non-quasi equilibrium process, it takes more work to move the piston against this high-pressure region. 
 
        
                    
             
        
        
        
Answer:
(d) all of the above 
Explanation:
before cutting the screw threads the operator should lubricate all of the machine parts given in the option that is lead screw and gearbox , the ways and the cross slide and the carriage and half-nuts. we should use lubrication because it reduces the overall system friction and if friction is reduced then heat generated due to friction is also decreases which is beneficial 
so option (D) will be correct because we need lubricate in all the given parts   
 
        
             
        
        
        
Answer:
Automotive Technology Program
Explanation:
 Basically hiring students for hands on training to learn the basics of mechanics.