C For better tuning of an LCR circuit used for communication the circuit should possess high quality factor of resonance. $\mathrm{Q}=\frac{1}{\mathrm{R}} \sqrt{\frac{\mathrm{L}}{\mathrm{C}}} \text { should be high. }$ For it $\mathrm{R}$ should be low, $\mathrm{L}$ should be high and $\mathrm{C}$ should be low. Therefore, combination in option (c) is correct.
NEET- 2016
Alternating Current
155279
In LCR circuit if resistance increases quality factor
1 increases finitely
2 decreases finitely
3 remains constant
4 none of these
Explanation:
B We know that, Quality factor $(\mathrm{Q})=\frac{\omega_{\circ} \mathrm{L}}{\mathrm{R}}$ Therefore, resistance $\mathrm{R}$ increases then quality factor $\mathrm{Q}$ definitely decreases.
DCE-2007
Alternating Current
155105
Find the mismatch pair
1 Induction furnace : eddy current
2 A.C. generator : armature coil
3 LCR circuit armature coil : resonance
4 Transformer resonance : D.C. voltage
5 Magnetic brakes : magnetic flux magnetic flux
Explanation:
D Transformer is working on AC current not DC current. Its changes an alternating voltage for smaller or greater value.
Kerala CEE 04.07.2022
Alternating Current
155115
In an A.C. circuit. the current:
1 always leads the voltage
2 always lags behind the voltage
3 is always in phase with voltage
4 may lead or lags behind or be in phase with voltage
Explanation:
D In an A.C. circuit. the current may lead or lags behind or be in phase with voltage.
C For better tuning of an LCR circuit used for communication the circuit should possess high quality factor of resonance. $\mathrm{Q}=\frac{1}{\mathrm{R}} \sqrt{\frac{\mathrm{L}}{\mathrm{C}}} \text { should be high. }$ For it $\mathrm{R}$ should be low, $\mathrm{L}$ should be high and $\mathrm{C}$ should be low. Therefore, combination in option (c) is correct.
NEET- 2016
Alternating Current
155279
In LCR circuit if resistance increases quality factor
1 increases finitely
2 decreases finitely
3 remains constant
4 none of these
Explanation:
B We know that, Quality factor $(\mathrm{Q})=\frac{\omega_{\circ} \mathrm{L}}{\mathrm{R}}$ Therefore, resistance $\mathrm{R}$ increases then quality factor $\mathrm{Q}$ definitely decreases.
DCE-2007
Alternating Current
155105
Find the mismatch pair
1 Induction furnace : eddy current
2 A.C. generator : armature coil
3 LCR circuit armature coil : resonance
4 Transformer resonance : D.C. voltage
5 Magnetic brakes : magnetic flux magnetic flux
Explanation:
D Transformer is working on AC current not DC current. Its changes an alternating voltage for smaller or greater value.
Kerala CEE 04.07.2022
Alternating Current
155115
In an A.C. circuit. the current:
1 always leads the voltage
2 always lags behind the voltage
3 is always in phase with voltage
4 may lead or lags behind or be in phase with voltage
Explanation:
D In an A.C. circuit. the current may lead or lags behind or be in phase with voltage.
C For better tuning of an LCR circuit used for communication the circuit should possess high quality factor of resonance. $\mathrm{Q}=\frac{1}{\mathrm{R}} \sqrt{\frac{\mathrm{L}}{\mathrm{C}}} \text { should be high. }$ For it $\mathrm{R}$ should be low, $\mathrm{L}$ should be high and $\mathrm{C}$ should be low. Therefore, combination in option (c) is correct.
NEET- 2016
Alternating Current
155279
In LCR circuit if resistance increases quality factor
1 increases finitely
2 decreases finitely
3 remains constant
4 none of these
Explanation:
B We know that, Quality factor $(\mathrm{Q})=\frac{\omega_{\circ} \mathrm{L}}{\mathrm{R}}$ Therefore, resistance $\mathrm{R}$ increases then quality factor $\mathrm{Q}$ definitely decreases.
DCE-2007
Alternating Current
155105
Find the mismatch pair
1 Induction furnace : eddy current
2 A.C. generator : armature coil
3 LCR circuit armature coil : resonance
4 Transformer resonance : D.C. voltage
5 Magnetic brakes : magnetic flux magnetic flux
Explanation:
D Transformer is working on AC current not DC current. Its changes an alternating voltage for smaller or greater value.
Kerala CEE 04.07.2022
Alternating Current
155115
In an A.C. circuit. the current:
1 always leads the voltage
2 always lags behind the voltage
3 is always in phase with voltage
4 may lead or lags behind or be in phase with voltage
Explanation:
D In an A.C. circuit. the current may lead or lags behind or be in phase with voltage.
C For better tuning of an LCR circuit used for communication the circuit should possess high quality factor of resonance. $\mathrm{Q}=\frac{1}{\mathrm{R}} \sqrt{\frac{\mathrm{L}}{\mathrm{C}}} \text { should be high. }$ For it $\mathrm{R}$ should be low, $\mathrm{L}$ should be high and $\mathrm{C}$ should be low. Therefore, combination in option (c) is correct.
NEET- 2016
Alternating Current
155279
In LCR circuit if resistance increases quality factor
1 increases finitely
2 decreases finitely
3 remains constant
4 none of these
Explanation:
B We know that, Quality factor $(\mathrm{Q})=\frac{\omega_{\circ} \mathrm{L}}{\mathrm{R}}$ Therefore, resistance $\mathrm{R}$ increases then quality factor $\mathrm{Q}$ definitely decreases.
DCE-2007
Alternating Current
155105
Find the mismatch pair
1 Induction furnace : eddy current
2 A.C. generator : armature coil
3 LCR circuit armature coil : resonance
4 Transformer resonance : D.C. voltage
5 Magnetic brakes : magnetic flux magnetic flux
Explanation:
D Transformer is working on AC current not DC current. Its changes an alternating voltage for smaller or greater value.
Kerala CEE 04.07.2022
Alternating Current
155115
In an A.C. circuit. the current:
1 always leads the voltage
2 always lags behind the voltage
3 is always in phase with voltage
4 may lead or lags behind or be in phase with voltage
Explanation:
D In an A.C. circuit. the current may lead or lags behind or be in phase with voltage.