# Two sinusoidal signals p(ω1t)=A sinω1t and q(ω2t) are applied to X and Y inputs of a dual channel CRO.The Lissajous figure displayed on the screen is shown below The signal q(ω2t) will be represented as

1.  q(ω2t) = A sin ω2t, ω2 = 2ω1

2.  q(ω2t) = A sin ω2t, ω2 = ω1/2

3.  q(ω2t) = A cos ω2t, ω2 = 2ω1

4.  q(ω2t) = A cos ω2t, ω2 = ω1/2

4

q(ω2t) = A cos ω2t, ω2 = ω1/2

Explanation :
No Explanation available for this question

# The ac bridge shown in the figure is used to measure the impedance Z. If the bridge is balanced for oscillator frequency f = 2 kHz, then the impedance Z will be

1.  (260+j0) Ω

2.   (0+j200) Ω

3.  (260-j200) Ω

4.  (260+j200) Ω

4

(260+j0) Ω

Explanation :
No Explanation available for this question

# The charge stored in the capacitor at t=5 us,will be

1.  8 nC

2.  10 nC

3.  18 nC

4.  16 nC

4

18 nC

Explanation :
No Explanation available for this question

# The capacitor charged upto 5 µs, as per the current profile given in the figure, is connected across inductor of 0.6 mH. Then the value of voltage across the capacitor after 1 µs will approximately be

1.  18.8 V

2.  23.5 V

3.  -23.5 V

4.  -30.6 V

4

-23.5 V

Explanation :
No Explanation available for this question

# The transfer function G(s) of this system will be

1.  s/(s+2)

2.  (s+1)/s(s-2)

3.  s/(s-2)

4.  1/s(s+2)

4

1/s(s+2)

Explanation :
No Explanation available for this question

# A unity feedback is provided to the above system G(s) to make it a closed loop system as shown in figure.For a unit step input r(t),the steady state error in the output will be

1.  0

2.  1

3.  2

4.  ∞

4

0

Explanation :
No Explanation available for this question

# If R1=R2=RA and R3=R4=RB,the circuit acts as a

1.  all pass filter

2.  band pass filter

3.  high pass filter

4.  low pass filter

4

high pass filter

Explanation :
No Explanation available for this question

# The output of the filter in above one  is given to the circuit shown in figure The gain vs frequency characteristic of the output (vn) will be

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# The net voltage across the armature resistance at the time of plugging will be

1.  6 V

2.  234 V

3.  240 V

4.  474 V

4

474 V

Explanation :
No Explanation available for this question

1.  31.1 Ω

2.  31.9 Ω

3.  15.1 Ω

4.  15.9 Ω

4