A A choke coil in used for a.c. only not for d.c. Because for d.c. frequency is zero inductive reactance become zero.
J and K CET- 2000
Alternating Current
155457
For an ideal step-down transformer, the quantity which is constant for both the coils is
1 Current in the coils
2 Voltage across the coils
3 Resistance of coils
4 Power in the coils
Explanation:
D For an ideal transformer there should be no loss of power. Hence, power will be constant for both the coil.
J and K CET-2016
Alternating Current
155459
In a step-up transformer, the turn ratio is $1: 2$. A Leclanche cell $(\mathrm{emf}=1.5 \mathrm{~V})$ is connected across the primary. The voltage developed in the secondary will be
1 $3.0 \mathrm{~V}$
2 $0.75 \mathrm{~V}$
3 $1.5 \mathrm{~V}$
4 zero
Explanation:
D Transformer work on AC voltage, when we apply dc voltage on primary then there will be no voltage induced in secondary. $\therefore \quad \mathrm{E}_{2}=0$
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Alternating Current
155452
A choke coil is used in
1 a.c. circuit only
2 d.c. circuit only
3 a.c. and d. c. ciruit
4 neither a.c. nor d.c. circuits
Explanation:
A A choke coil in used for a.c. only not for d.c. Because for d.c. frequency is zero inductive reactance become zero.
J and K CET- 2000
Alternating Current
155457
For an ideal step-down transformer, the quantity which is constant for both the coils is
1 Current in the coils
2 Voltage across the coils
3 Resistance of coils
4 Power in the coils
Explanation:
D For an ideal transformer there should be no loss of power. Hence, power will be constant for both the coil.
J and K CET-2016
Alternating Current
155459
In a step-up transformer, the turn ratio is $1: 2$. A Leclanche cell $(\mathrm{emf}=1.5 \mathrm{~V})$ is connected across the primary. The voltage developed in the secondary will be
1 $3.0 \mathrm{~V}$
2 $0.75 \mathrm{~V}$
3 $1.5 \mathrm{~V}$
4 zero
Explanation:
D Transformer work on AC voltage, when we apply dc voltage on primary then there will be no voltage induced in secondary. $\therefore \quad \mathrm{E}_{2}=0$
A A choke coil in used for a.c. only not for d.c. Because for d.c. frequency is zero inductive reactance become zero.
J and K CET- 2000
Alternating Current
155457
For an ideal step-down transformer, the quantity which is constant for both the coils is
1 Current in the coils
2 Voltage across the coils
3 Resistance of coils
4 Power in the coils
Explanation:
D For an ideal transformer there should be no loss of power. Hence, power will be constant for both the coil.
J and K CET-2016
Alternating Current
155459
In a step-up transformer, the turn ratio is $1: 2$. A Leclanche cell $(\mathrm{emf}=1.5 \mathrm{~V})$ is connected across the primary. The voltage developed in the secondary will be
1 $3.0 \mathrm{~V}$
2 $0.75 \mathrm{~V}$
3 $1.5 \mathrm{~V}$
4 zero
Explanation:
D Transformer work on AC voltage, when we apply dc voltage on primary then there will be no voltage induced in secondary. $\therefore \quad \mathrm{E}_{2}=0$