05. Dynamo, Transformer Inductance
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Alternating Current

155414 Which of the following is most suitable for the core of electromagnets?

1 Air
2 Soft iron
3 Steel
4 $\mathrm{Cu}-\mathrm{Ni}$ alloy
CG PET- 2010
Alternating Current

155418 Which types of losses do not occur in the transformer?

1 Iron losses
2 Copper losses
3 Mechanical losses
4 flux leakage
CG PET- 2008
Alternating Current

155427 When power is drawn from the secondary coil of the transformer, the dynamic resistance

1 increases
2 decreases
3 remains unchanged
4 changes erratically
JCECE-2007
Alternating Current

155428 In a step-up transformer the turn ratio is $1: 8$. A lead accumulator $(\mathrm{emf}=6 \mathrm{~V}$ ) is connected across the primary coil of the transformer. The voltage across the secondary coil is :

1 $48 \mathrm{~V}$
2 $0.75 \mathrm{~V}$
3 $14 \mathrm{~V}$
4 zero
JCECE-2006
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Alternating Current

155414 Which of the following is most suitable for the core of electromagnets?

1 Air
2 Soft iron
3 Steel
4 $\mathrm{Cu}-\mathrm{Ni}$ alloy
CG PET- 2010
Alternating Current

155418 Which types of losses do not occur in the transformer?

1 Iron losses
2 Copper losses
3 Mechanical losses
4 flux leakage
CG PET- 2008
Alternating Current

155427 When power is drawn from the secondary coil of the transformer, the dynamic resistance

1 increases
2 decreases
3 remains unchanged
4 changes erratically
JCECE-2007
Alternating Current

155428 In a step-up transformer the turn ratio is $1: 8$. A lead accumulator $(\mathrm{emf}=6 \mathrm{~V}$ ) is connected across the primary coil of the transformer. The voltage across the secondary coil is :

1 $48 \mathrm{~V}$
2 $0.75 \mathrm{~V}$
3 $14 \mathrm{~V}$
4 zero
JCECE-2006
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Alternating Current

155414 Which of the following is most suitable for the core of electromagnets?

1 Air
2 Soft iron
3 Steel
4 $\mathrm{Cu}-\mathrm{Ni}$ alloy
CG PET- 2010
Alternating Current

155418 Which types of losses do not occur in the transformer?

1 Iron losses
2 Copper losses
3 Mechanical losses
4 flux leakage
CG PET- 2008
Alternating Current

155427 When power is drawn from the secondary coil of the transformer, the dynamic resistance

1 increases
2 decreases
3 remains unchanged
4 changes erratically
JCECE-2007
Alternating Current

155428 In a step-up transformer the turn ratio is $1: 8$. A lead accumulator $(\mathrm{emf}=6 \mathrm{~V}$ ) is connected across the primary coil of the transformer. The voltage across the secondary coil is :

1 $48 \mathrm{~V}$
2 $0.75 \mathrm{~V}$
3 $14 \mathrm{~V}$
4 zero
JCECE-2006
Join With Us for More Updates
Alternating Current

155414 Which of the following is most suitable for the core of electromagnets?

1 Air
2 Soft iron
3 Steel
4 $\mathrm{Cu}-\mathrm{Ni}$ alloy
CG PET- 2010
Alternating Current

155418 Which types of losses do not occur in the transformer?

1 Iron losses
2 Copper losses
3 Mechanical losses
4 flux leakage
CG PET- 2008
Alternating Current

155427 When power is drawn from the secondary coil of the transformer, the dynamic resistance

1 increases
2 decreases
3 remains unchanged
4 changes erratically
JCECE-2007
Alternating Current

155428 In a step-up transformer the turn ratio is $1: 8$. A lead accumulator $(\mathrm{emf}=6 \mathrm{~V}$ ) is connected across the primary coil of the transformer. The voltage across the secondary coil is :

1 $48 \mathrm{~V}$
2 $0.75 \mathrm{~V}$
3 $14 \mathrm{~V}$
4 zero
JCECE-2006
For More Updates join with Us