A. less will be the secondary induced e.m.f.
B. less will be the primary induced e.m.f.
C. less will be the primary terminal voltage
D. none of the above
Related Mcqs:
- If R2 is the resistance of secondary winding of the transformer and K is the transformation ratio then the equivalent secondary resistance referred to primary will be___________?
A. R2/VK
B. R2IK2
C. R22!K2
D. R22/K - The leakage flux in a transformer depends upon______________?
A. load current
B. load current and voltage
C. load current, voltage and frequency
D. load current, voltage, frequency and power factor - An ideal transformer has infinite values of primary and secondary inductances. The statement is______________?
A. true
B. false - In a transformer the resistance between its primary and secondary is____________?
A. zero
B. 1 ohm
C. 1000 ohms
D. infinite - When secondary of a current transformer is open-circuited its iron core will be__________?
A. hot because of heavy iron losses taking place in it due to high flux density
B. hot because primary will carry heavy current
C. cool as there is no secondary current
D. none of above will happen - The secondary winding of which of the following transformers is always kept closed?
A. Step-up transformer
B. Step-down transformer
C. Potential transformer
D. Current transformer - The secondary of a current transformer is always short-circuited under operating conditions because it____________________?
A. avoids core saturation and high voltage induction
B. is safe to human beings
C. protects the primary circuit
D. none of the above - In a transformer the resistance between its primary and secondary should be_____________?
A. zero
B. 10 Q
C. 1000 Q
D. infinity - In the transformer following winding has got more cross-sectional area______________?
A. Low voltage winding
B. High voltage winding
C. Primary winding
D. Secondary winding - The chemical used in breather is_______________?
A. asbestos fiber
B. silica sand
C. sodium chloride
D. silica gel
