Multiple Choice Questions on Electrical Circuits-2

By -
Important Multiple Choice Questions in Electrical Circuits

1.       When a number of 2 port networks are connected in cascade, then equivalent can be obtained by
A)     Adding individual Z matrices
B)      Adding individual Y matrices
C)      Multiplying  individual Chain matrices
D)     Multiplying  individual h matrices
2.       A periodic function is said to have a quarter wave symmetry, if it possesses
A)     Even symmetry at an interval of quarter of a wave
B)      Even symmetry and half-wave symmetry only
C)      Even or odd symmetry without the half wave symmetry
D)     Even or odd symmetry with the half wave symmetry
3.       A ramp voltage v(t)=100 V, is applied to an RC differentiating circuit with R=5kΩ and C=4 μF. The maximum output voltage is
A)     0.2 V
B)      2 V
C)      10V
D)     50 V
4.       The reciprocal of a network function is
A)     An immittance function, if the original function is an omittance function
B)      A transfer function, if the original function is a transfer function
C)      Never an immittance function
D)     Never a transfer function
5.       In RLC series resonant circuit at the half power points
A)     Current is half of the current at response
B)      Impedance is half the impedance at resonance
C)      Resistance is equal to the resultant reactance
D)     None of these
6.       The network has7 nodes and 5 independent loops. The number of branches in the network is
A)     13
B)      12
C)      11
D)     10
7.       The maximum value of mutual inductance of two inductively coupled coils with self inductances L1=49mH and L2=81mH is
A)     130 mH
B)      63 mH
C)      32 mH
D)     3969 mH
8.       Power factor of pure inductor is
A)     0
B)      1/1.414
C)      1
D)     2
9.       When compared to a first-order low-pass filter, a second order low-pass filter has
A)     Low voltage gain
B)      Higher voltage gain
C)      Faster drop in filter response
D)     Higher cut off frequency
10.    On closing switch S, the circuit in the given figure is in steady-state. The current in the inductor after opening the switch S will
A)     Decay exponentially with a time constant of 2S
B)      Decay exponentially with a time constant of 0.5S
C)      Consist of two decaying exponentials each with a time constant of 0.5S
D)     Be oscillatory



Comments

ekeeda001 said…
Your blog is so interesting and very informative,the quality of information you used in this is excellent. Thanks for posting this.
get more: Electrical Circuits 2

16 October 2019 at 08:41
Post a Comment

Popular posts from this blog

Multiple Choice Questions in Power Electronics - 1

By -
  Important multiple choice questions from Power Electronics 1.       Which one of the following statements is not correct? a)       Power MOSFETs are so constructed as to avoid punch through. b)       In a power MOSFET, the channel length is relatively large and channel width is relatively small c)       Power MOSFETs do not experience any minority carrier storage d)       Power MOSFETs can be put in parallel to handle large currents 2.       Which one is most suitable power device for high frequency (>100 kHz) switching application? a)       Power MOSFET b)       BJT c)       Schottky diode d)       Microwave transistor 3.       A thyristor equivalent of thyratron tube is a)       SCR b)       UJT c)       Diac d)       Triac 4.       Turn-on of thyristor takes place when a)       Anode to cathode voltages is positive b)       Anode to cathode voltages is negative c)       There is a positive current pulse at the gate d)       The
Read more

Multiple Choice Questions on Power System - 3

By -
Important multiple choice questions on power system 1.        A line trap in carrier current relaying tuned to carrier frequency presents A)      High impedance to carrier frequency but low impedance to power frequency B)       Low impedance to both carrier and power frequency C)       High impedance to both carrier and power frequencies D)      Low impedance to carrier frequency and high impedance to power frequency 2.        The use of fast acting relays and circuit breakers for clearing a sudden short circuit on a transmission link between generator and the receiving end bus improves the transient stability of the machine because A)      Short circuit current becomes zero B)       Post-fault transfer impedance attains a value higher than that during the fault C)       Ordinate of the post-fault power-angle characteristic is higher than that of during fault characteristic D)      Voltage behind the transient reactance increases to a higher value 3.        A
Read more

Multiple Choice Questions on Power Systems - 7

By -
Important Multiple Choice questions on Power Systems 1.        For transmission line which one of the following relations is true? A)      AD-BC=1 B)       –AD-BC=1 C)       AD-BC=-1 D)      AD-BC=0 2.        For a given base voltage and base volt-amp, the per unit impedance value of an element is X. what will be the per-unit impedance value of this element when the voltage and volt-amp bases are both doubled? A)      4X B)       2X C)       X D)      0.5X 3.        A 3-phase transmission line has its conductors at the corners of an equilateral triangle with side 3m. the diameter of each conductor is 1.63 cm. the inductance of the line per phase per km is A)      1.232 mH B)       1.182 mH C)       1.093 mH D)      1.043 mH 4.        A cable has inductance of 0.22mH per km and capacitance of 0.202 micro farads per km. the surge impedance of the cable is A)      28 ohms B)       33 ohms C)       42 ohms D)      50 ohms 5.        The capacitanc
Read more