356299
Assertion : Step-down transformer decreases the output voltage. Reason : Transformer obeys the law of conservation of energy.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Step-down transformer \({V_{oupput{\rm{ }}}} < {V_{input{\rm{ }}}}\) transformer obey's law of conservation of energy. So correct option is (2).
PHXII07:ALTERNATING CURRENT
356300
The primary of a transformer has 400 turns while the secondary has 2000 turns. If the power output from the secondary at \(1000\;V\) is \(12\;kw\), what is the primary voltage?
356301
The number of turns in primary and secondary coils of a transformer are 5 and 10 and mutual inductance of transformer is 25 \(H\), Now, if the number of turns in primary and secondary are 10 and 5, the new mutual inductance will be:
356302
Assertion : Transformers are used only in alternating current source not in direct current. Reason : Only A.C. can be stepped up or down by means of transformers.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Transformers are primarily used with \(A C\) sources due to the changing magnetic field required for mutual induction, which is not present in \(D C\) sources. So correct option is (1).
PHXII07:ALTERNATING CURRENT
356303
A transformer steps up an \(A.C.\) voltage from \(230\;V\) to \(2300\;V\). If the number of turns in the secondary coil is 1000 , the number of turns in the primary coil will be
1 100
2 10,000
3 500
4 1000
Explanation:
\(\dfrac{N_{s}}{N_{p}}=\dfrac{V_{s}}{V_{p}}\) \(\begin{aligned}& \Rightarrow \dfrac{1000}{N_{p}}=\dfrac{2300}{230} \\& \Rightarrow N_{p}=100\end{aligned}\) So, the correct option is (1).
356299
Assertion : Step-down transformer decreases the output voltage. Reason : Transformer obeys the law of conservation of energy.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Step-down transformer \({V_{oupput{\rm{ }}}} < {V_{input{\rm{ }}}}\) transformer obey's law of conservation of energy. So correct option is (2).
PHXII07:ALTERNATING CURRENT
356300
The primary of a transformer has 400 turns while the secondary has 2000 turns. If the power output from the secondary at \(1000\;V\) is \(12\;kw\), what is the primary voltage?
356301
The number of turns in primary and secondary coils of a transformer are 5 and 10 and mutual inductance of transformer is 25 \(H\), Now, if the number of turns in primary and secondary are 10 and 5, the new mutual inductance will be:
356302
Assertion : Transformers are used only in alternating current source not in direct current. Reason : Only A.C. can be stepped up or down by means of transformers.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Transformers are primarily used with \(A C\) sources due to the changing magnetic field required for mutual induction, which is not present in \(D C\) sources. So correct option is (1).
PHXII07:ALTERNATING CURRENT
356303
A transformer steps up an \(A.C.\) voltage from \(230\;V\) to \(2300\;V\). If the number of turns in the secondary coil is 1000 , the number of turns in the primary coil will be
1 100
2 10,000
3 500
4 1000
Explanation:
\(\dfrac{N_{s}}{N_{p}}=\dfrac{V_{s}}{V_{p}}\) \(\begin{aligned}& \Rightarrow \dfrac{1000}{N_{p}}=\dfrac{2300}{230} \\& \Rightarrow N_{p}=100\end{aligned}\) So, the correct option is (1).
356299
Assertion : Step-down transformer decreases the output voltage. Reason : Transformer obeys the law of conservation of energy.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Step-down transformer \({V_{oupput{\rm{ }}}} < {V_{input{\rm{ }}}}\) transformer obey's law of conservation of energy. So correct option is (2).
PHXII07:ALTERNATING CURRENT
356300
The primary of a transformer has 400 turns while the secondary has 2000 turns. If the power output from the secondary at \(1000\;V\) is \(12\;kw\), what is the primary voltage?
356301
The number of turns in primary and secondary coils of a transformer are 5 and 10 and mutual inductance of transformer is 25 \(H\), Now, if the number of turns in primary and secondary are 10 and 5, the new mutual inductance will be:
356302
Assertion : Transformers are used only in alternating current source not in direct current. Reason : Only A.C. can be stepped up or down by means of transformers.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Transformers are primarily used with \(A C\) sources due to the changing magnetic field required for mutual induction, which is not present in \(D C\) sources. So correct option is (1).
PHXII07:ALTERNATING CURRENT
356303
A transformer steps up an \(A.C.\) voltage from \(230\;V\) to \(2300\;V\). If the number of turns in the secondary coil is 1000 , the number of turns in the primary coil will be
1 100
2 10,000
3 500
4 1000
Explanation:
\(\dfrac{N_{s}}{N_{p}}=\dfrac{V_{s}}{V_{p}}\) \(\begin{aligned}& \Rightarrow \dfrac{1000}{N_{p}}=\dfrac{2300}{230} \\& \Rightarrow N_{p}=100\end{aligned}\) So, the correct option is (1).
NEET Test Series from KOTA - 10 Papers In MS WORD
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PHXII07:ALTERNATING CURRENT
356299
Assertion : Step-down transformer decreases the output voltage. Reason : Transformer obeys the law of conservation of energy.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Step-down transformer \({V_{oupput{\rm{ }}}} < {V_{input{\rm{ }}}}\) transformer obey's law of conservation of energy. So correct option is (2).
PHXII07:ALTERNATING CURRENT
356300
The primary of a transformer has 400 turns while the secondary has 2000 turns. If the power output from the secondary at \(1000\;V\) is \(12\;kw\), what is the primary voltage?
356301
The number of turns in primary and secondary coils of a transformer are 5 and 10 and mutual inductance of transformer is 25 \(H\), Now, if the number of turns in primary and secondary are 10 and 5, the new mutual inductance will be:
356302
Assertion : Transformers are used only in alternating current source not in direct current. Reason : Only A.C. can be stepped up or down by means of transformers.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Transformers are primarily used with \(A C\) sources due to the changing magnetic field required for mutual induction, which is not present in \(D C\) sources. So correct option is (1).
PHXII07:ALTERNATING CURRENT
356303
A transformer steps up an \(A.C.\) voltage from \(230\;V\) to \(2300\;V\). If the number of turns in the secondary coil is 1000 , the number of turns in the primary coil will be
1 100
2 10,000
3 500
4 1000
Explanation:
\(\dfrac{N_{s}}{N_{p}}=\dfrac{V_{s}}{V_{p}}\) \(\begin{aligned}& \Rightarrow \dfrac{1000}{N_{p}}=\dfrac{2300}{230} \\& \Rightarrow N_{p}=100\end{aligned}\) So, the correct option is (1).
356299
Assertion : Step-down transformer decreases the output voltage. Reason : Transformer obeys the law of conservation of energy.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Step-down transformer \({V_{oupput{\rm{ }}}} < {V_{input{\rm{ }}}}\) transformer obey's law of conservation of energy. So correct option is (2).
PHXII07:ALTERNATING CURRENT
356300
The primary of a transformer has 400 turns while the secondary has 2000 turns. If the power output from the secondary at \(1000\;V\) is \(12\;kw\), what is the primary voltage?
356301
The number of turns in primary and secondary coils of a transformer are 5 and 10 and mutual inductance of transformer is 25 \(H\), Now, if the number of turns in primary and secondary are 10 and 5, the new mutual inductance will be:
356302
Assertion : Transformers are used only in alternating current source not in direct current. Reason : Only A.C. can be stepped up or down by means of transformers.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Transformers are primarily used with \(A C\) sources due to the changing magnetic field required for mutual induction, which is not present in \(D C\) sources. So correct option is (1).
PHXII07:ALTERNATING CURRENT
356303
A transformer steps up an \(A.C.\) voltage from \(230\;V\) to \(2300\;V\). If the number of turns in the secondary coil is 1000 , the number of turns in the primary coil will be
1 100
2 10,000
3 500
4 1000
Explanation:
\(\dfrac{N_{s}}{N_{p}}=\dfrac{V_{s}}{V_{p}}\) \(\begin{aligned}& \Rightarrow \dfrac{1000}{N_{p}}=\dfrac{2300}{230} \\& \Rightarrow N_{p}=100\end{aligned}\) So, the correct option is (1).