Voltage across capacitor in R-L-C circuit is maximum

1.  At resonance

2.  Just before resonance

3.   Just after resonance

4.  Much after resonance

View Answer  
4
Correct Answer :

Just before resonance


Explanation :
No Explanation available for this question

In a pure parallel LC circuit under response condition, current drawn from main supply is

1.  Very large

2.  V√LC

3.  V/√LC

4.  0

View Answer  
4
Correct Answer :

0


Explanation :
No Explanation available for this question

In the network shown, it is given that v=2.48V and dv/dt=3.5v/s at a time t, where t is the time after the switch S is closed. That is the value of C

1.  0.1F

2.  0.05F

3.  0.15F

4.  0.20F

View Answer  
4
Correct Answer :

0.20F


Explanation :
No Explanation available for this question

Determine the frequency with which neon lamp glows when connected in the circuit shown. The lamp glows at V2 and over and is extinguished at V1. The direct voltage V applied to the circuit is such that V > V2 > V1 [r < < R when lamp is conducting and infinite when the lamp is nom-conducting]

1.  1/[RCln[V-V1/V2-V]]

2.  1/[RCln[V1-V/V2-V]]

3.  1/[RCln[V1-V/V-V2]]

4.  1/[RCln[V-V1/V-V2]]

View Answer  
4
Correct Answer :

1/[RCln[V-V1/V-V2]]


Explanation :
No Explanation available for this question

Z may comprise of

1.  Series combinations of -5mH & 16

2.  Parallel combinations of 2-5mH & 16

3.  Both (A) & (B)

4.  None of these

View Answer  
4
Correct Answer :

Parallel combinations of 2-5mH & 16


Explanation :
No Explanation available for this question

Determine the maximum energy stored for t > 0 in the inductor

1.  0.5J

2.  1.0J

3.  1.5J

4.  2.0J

View Answer  
4
Correct Answer :

1.0J


Explanation :
No Explanation available for this question

Find i(t) when Vs(t)=100sin(2510t)

1.  10cos(2510t)

2.  10sin(25t)

3.  10cos(25t)

4.  10sin(2510t)

View Answer  
4
Correct Answer :

10sin(2510t)


Explanation :
No Explanation available for this question

For equation sinωt+3√2 sin(ωt+π/4)=Acos(ωt+θ). What is value of A and θ

1.  A=5, θ= - tan-1 4/3

2.  A=5, θ= tan-1 3/4

3.  A=-5, θ= tan-1 3/4

4.  A=5, θ= - tan-1 3/4

View Answer  
4
Correct Answer :

A=5, θ= - tan-1 4/3


Explanation :
No Explanation available for this question

Network 1 and network 2 consist a combination of R, L, C elements. If network 1→L=2H, network 2→R=1Ω and ω=0.5rad/sec. then φ is

1.  00

2.  900

3.  -450

4.  -900

View Answer  
4
Correct Answer :

-450


Explanation :
No Explanation available for this question

3 vectors X, Y, Z are shown in the plane of paper. Here. What is the magnitude of the resultant vector

1.  13

2.  8

3.  12

4.  17

5.  soup

6.  cheeseburger

7.  hamburger

8.  fried eggs

9.  ham sandwich

View Answer  
9
Correct Answer :

hamburger


Explanation :
No Explanation available for this question
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