Home >> My Performance >> My Topic Test Performance >> My Question Performance
My Question Performance Summary in Full Tests !
Questions Available: 5
Questions Attempted: 10
Number of Attempts: 15
Correct Attempts: 8
Total Time Spent: 00:30
Avg Time Per Question: 00:02
My Question Performance Summary in Full Tests
The net impedence of circuit (as shown in figure) will be
(1). \(15\, \Omega\)
(2). \(5 \sqrt{5}\, \Omega\)
(3). \(25\, \Omega\)
(4). \(10 \sqrt{2}\, \Omega\)
(1). \(15\, \Omega\)
(2). \(5 \sqrt{5}\, \Omega\)
(3). \(25\, \Omega\)
(4). \(10 \sqrt{2}\, \Omega\)
Number of Attempts: 2
Correct Attempts: 1
Time Taken: 00:04
Average Time: 00:02
To an ac power supply of 220 V at 50 Hz, a resistor of 20 \(\Omega\), a capacitor of reactance 25 \(\Omega\) and an inductor of reactance 45 \(\Omega\) are connected in series. The corresponding current in the circuit and the phase angle between the current and the voltage is, respectively
(1). \(15.6\, \text{A}\) and \(45^\circ\)
(2). \(7.8\, \text{A}\) and \(30^\circ\)
(3). \(7.8\, \text{A}\) and \(45^\circ\)
(4). \(15.6\, \text{A}\) and \(30^\circ\)
(1). \(15.6\, \text{A}\) and \(45^\circ\)
(2). \(7.8\, \text{A}\) and \(30^\circ\)
(3). \(7.8\, \text{A}\) and \(45^\circ\)
(4). \(15.6\, \text{A}\) and \(30^\circ\)
Number of Attempts: 2
Correct Attempts: 1
Time Taken: 00:04
Average Time: 00:02
An inductor of inductance L, a capacitor of capacitance C and a resistor of resistance ' R ' are connected in series to an ac source of potential difference 'V' volts as shown in figure. Potential difference across L, C and R is 40V , 10 V and 40V ,respectively. The amplitude of current flowing through C R series circuit is \(10\, \sqrt{2}\) A. The impedance of the circuit is
(1). \(4\, \sqrt{2}\, \Omega\)
(2). \(5\, \sqrt{2}\, \Omega\)
(3). \(4\, \Omega\)
(4). \(5\, \Omega\)
(1). \(4\, \sqrt{2}\, \Omega\)
(2). \(5\, \sqrt{2}\, \Omega\)
(3). \(4\, \Omega\)
(4). \(5\, \Omega\)
Number of Attempts: 2
Correct Attempts: 1
Time Taken: 00:04
Average Time: 00:02
A series L-C-R circuit containing \(5.0\, \text{H}\) inductor, \(80\, \mu \text{F}\) capacitor and \(40\, \Omega\) resistor is connected to 230 V variable frequency AC source.The angular frequencies of the source at which power transferred to the circuit is half the power at the resonant angular frequency are likely to be
(1). 25 rad/s and 75 rad/s
(2). 50 rad/s and 25 rad/s
(3). 46 rad/s and 54 rad/s
(4). 42 rad/s and 58 rad/s
(1). 25 rad/s and 75 rad/s
(2). 50 rad/s and 25 rad/s
(3). 46 rad/s and 54 rad/s
(4). 42 rad/s and 58 rad/s
Number of Attempts: 2
Correct Attempts: 1
Time Taken: 00:04
Average Time: 00:02
A 40μF capacitor is connected to a 200 V, 50 Hz AC supply. The rms value of the current in the circuit is, nearly
(1). 2.05 A
(2). 2.5 A
(3). 25.1 A
(4). 1.7 A
(1). 2.05 A
(2). 2.5 A
(3). 25.1 A
(4). 1.7 A
Number of Attempts: 2
Correct Attempts: 1
Time Taken: 00:04
Average Time: 00:02