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A. Makes it usable in almost all magnetic circuits where alternating current is used

B. Increases its electrical resistivity and decreases the hysteresis loss

C. Is present upto 5% & 4% respectively when used in transformers & motor armatures

D. All of the above

A. Cryolite

B. Azurite

C. Chalcopyrite

D. Malachite

A. Flanged joint

B. Expansion joint

C. Bell and spigot joint

D. None of these

A. Air filter

B. Fuel injector

C. Exhaust silencer

D. Battery

A. Automatic expansion valve

B. Thermostatic expansion valve

C. Float valve

D. Capillary tube

A. Throttle down (i.e., reduce) the pressure of steam

B. Convert internal energy into kinetic energy

C. Increase the velocity of steam

D. All of the above

A. 20

B. 60

C. 120

D. ∞

A. Anti

B. Para

C. Ferri

D. Ferro

A. Impact

B. Completely reversed

C. Dynamic

D. Static & dynamic

A. Ballast

B. Voltage balancing potentiometric

C. Simple current sensitive

D. None of these