JKCET SERIES Physics
Alternating Current
11 previous year questions.
Volume: 11 Ques
Yield: Medium
High-Yield Trend
1
2018 1
2017 1
2016 1
2015 1
2013 1
2012 1
2011 1
2009 1
2008 2
2003 Chapter Questions 11 MCQs
01
PYQ 2003
medium
physics ID: jkcet-20
The current gain a of a transistor is The transistor is connected to common base configuration. What would be the change in collector current when base current changes by ?
1
1.2 mA
2
12 mA
3
24 mA
4
36 mA
02
PYQ 2003
medium
physics ID: jkcet-20
In a full wave rectifier circuit operating from main frequency, the fundamental frequency in the ripple would be
1
25 Hz
2
50 Hz
3
70.7 Hz
4
100 Hz
03
PYQ 2008
medium
physics ID: jkcet-20
In L-C-R series circuit the resonance condition in terms of capacitive reactance ( ) and inductive reactance ( is
1
2
3
4
04
PYQ 2009
medium
physics ID: jkcet-20
In AC circuit Ohm's law is applicable for
1
instantaneous values of current and voltage only
2
rms values of current and voltage only
3
peak values of current and voltage only
4
all values of current and voltage
05
PYQ 2011
medium
physics ID: jkcet-20
In the case of an inductor
1
voltage lags the current by
2
voltage leads the current by
3
voltage leads the current by
4
voltage leads the current by
06
PYQ 2012
medium
physics ID: jkcet-20
What is the resonance frequency of a driven oscillator?
1
2
3
4
07
PYQ 2013
medium
physics ID: jkcet-20
A signal is applied in a circuit of inductance of and resistance The impedance offered by the circuit is
1
2
3
4
08
PYQ 2015
medium
physics ID: jkcet-20
In a transformer the number of primary turns is four times that of the secondary turns. Its primary is connected to an source of voltage . Then,
1
Current through its secondary is about four times that of the current through its primary
2
Voltage across its secondary is about four times that of the voltage across its primary
3
Voltage across its secondary is about two times that of the voltage across its primary
4
Voltage across its secondary is about times that of the voltage across its primary
09
PYQ 2016
easy
physics ID: jkcet-20
For an ideal step-down transformer, the quantity which is constant for both the coils is
10
PYQ 2017
medium
physics ID: jkcet-20
A resistance of is connected in series with a capacitance of . The combination is connected to source of angular frequency . Then
1
the voltage leads the current by
2
the current leads the voltage by
3
the current leads the voltage by
4
the voltage leads the current by
11
PYQ 2018
medium
physics ID: jkcet-20
If the mains voltage is then the peak voltage approximately is
1
2
3
4
About Alternating Current - JKCET
Alternating Current is a vital chapter for JKCET aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
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