The cold rolled grain oriented steel has ______ permeability in the direction of
The cold rolled grain oriented steel has ______ permeability in the direction of the grain orientation.
The time taken by the machine to attain 0.632 of its final steady temperature ri
The time taken by the machine to attain 0.632 of its final steady temperature rise is called
Power transformers should be designed to have maximum efficiency
Power transformers should be designed to have maximum efficiency
With direct water cooling it is possible to have ratings of about
With direct water cooling it is possible to have ratings of about
are used for construction of core of electromagnets.
are used for construction of core of electromagnets.
In induction motors, the length of air gap in kept as small as mechanically poss
In induction motors, the length of air gap in kept as small as mechanically possible is order to have
For measurements on high voltage capacitors, the suitable bridge is
For measurements on high voltage capacitors, the suitable bridge is
Which of the following is the commonly used type of electromagnets ?
Which of the following is the commonly used type of electromagnets ?
To avoid the effect of stray magnetic field in A.C. bridges we can use
To avoid the effect of stray magnetic field in A.C. bridges we can use
D.C. machines designed with a large value of air gap length have
D.C. machines designed with a large value of air gap length have
The noise produced by a ______ cooled machine is less as the rotor moves in a me
The noise produced by a ______ cooled machine is less as the rotor moves in a medium of smaller density.
It is required to measure the true open circuit e.m.f. of a battery. The best de
It is required to measure the true open circuit e.m.f. of a battery. The best device is