For refrigerators the motor current is raised beyond its
rating on both conditions when the voltage of the system is
more(say 270v) than the rated voltage(220v) as well as when
the voltage of system is less(say 160v) than normal
voltageof 220v, why explain?
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What will happen if the d.c. Shunt motor opened accidentally running on no-load has its shunt field winding?
If Ac supply is given to the DC motor then what will happen? clear explanation
what is ripple ??? what is harmonics ?
what is transient voltage?
what is skin effect?
1. What are the tests to be carried out for CBCT? 2. can measure the secondary resistances? 3. with respect to secondary maximum how much voltage can be applied for IR test.
what is the purpose finding power factor?
why transformers are rated in KVA
Does the direction of rotation of d.c. Shunt motor would get reversed if the armature current and field current both are reversed?
WHAT WILL HAPPEN IF INPUT SUPPLY OF RCBO IS CONNECTED TO OUTPUT SIDE
What is order of the system?
WHY WE USE CABLE JUNCTION AFTER BETWEEN TANSMISSION LINE AND TRANSFORMER