The linear operation L(x) is defined by the cross product L(x) = bxx, where b = [0 1 0]T and x = [x1 x2 x3]T are three dimensional vectors. The 3 x 3 matrix M of this operation satisfies L(x) = M   Then the eigenvalues of M are

1.  0, + 1, -1  

2.  1, -1, 1

3.  i, -i, 1

4.  i, -i, 0

View Answer  
4
Correct Answer :

i, -i, 1


Explanation :
No Explanation available for this question

In the figure, transformer T1 has two secondaries, all three windings having the same number of turns and with polarities as indicated. One secondary is shorted by a 10 resistor R, and the other by a 15 µF capacitor. The switch SW is opened (t = 0) when the capacitor is charged to 5 V with the left plate as positive. At t = 0+ the voltage Vp and current IR are

1.  - 25 V, 0.0 A very large voltage, very large current 5.0 V, 0.5 A - 5.0 V, - 0.5 A

2.  very large voltage, very large current

3.  5.0 V, 0.5 A

4.  - 5.0 V, - 0.5 A

View Answer  
4
Correct Answer :

- 5.0 V, - 0.5 A


Explanation :
No Explanation available for this question

IC 555 in the adjacent figure is configured as an astable multivibrator. It is enabled to oscillate at t = 0 by applying a high input to pin 4. The pin description is : 1 and 8 - supply ; 2 - trigger; 4 - reset; 6 - threshold; 7- discharge. The waveform appearing across the capacitor starting from t  = 0, as observed on a storage CRO is

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

In the circuit of adjacent figure the diode connects the ac source to a pure inductance L.  The diode conducts for

1.  90°

2.  180°

3.  270°

4.  360°

View Answer  
4
Correct Answer :

270°


Explanation :
No Explanation available for this question

The circuit in the figure is a current commutated dc - dc chopper where, ThM is the main SCR and ThAUX is the auxiliary SCR. The load current is constant at 10 A. ThM is ON. ThAUX is triggered at t = 0. ThM is turned OFF between

1.  0 µs < t ≤ 25 µs

2.  25 µs < t ≤ 50 µs

3.  50 µs < t ≤ 75 µs

4.  75 µs < t ≤ 100 µs

View Answer  
4
Correct Answer :

25 µs < t ≤ 50 µs


Explanation :
No Explanation available for this question

In the circuit shown in figure switch SW1 is initially CLOSED and SW2 is OPEN. The inductor L carries a current of 10 A and the capacitor is charged to 10 V with polarities as indicated. SW2 is initially CLOSED at t = 0 - and SW1 is OPENED at t = 0. The current through C and the voltage across L at t = 0 + is

1.  55 A, 4.5 V

2.  5.5 A, 45 V

3.  45 A, 5.5 V

4.  4.5 A, 5.5 V

View Answer  
4
Correct Answer :

4.5 A, 5.5 V


Explanation :
No Explanation available for this question

The R-L-C series circuit shown is supplied from a variable frequency voltage source. The admittance-locus of the R-L-C network at terminals AB for increasing frequency ω is

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

In the figure given below all phasors are with reference to the potential at point "O". The locus of voltage phasor VYX as R is varied from zero to infinity is shown by

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

A 3 V dc supply with an internal resistance of 2 supplies a passive non-linear resistance characterized by the relation VNL= I2NL. The power dissipated in the non-linear resistance is  

1.  1.0 W

2.  1.5 W

3.  2.5 W

4.  3.0 W

View Answer  
4
Correct Answer :

1.0 W


Explanation :
No Explanation available for this question

Consider the feedback control system shown below which is subjected to a unit step input. The system is stable and has the following parameters kp = 4, ki = 10 ω = 500 and ξ = 0.7 The steady state value of z is  

1.  1  

2.  0.25

3.  0.1

4.  0

View Answer  
4
Correct Answer :

1

 


Explanation :
No Explanation available for this question
Previous Next

Interview Questions

MongoDB
Java Script
Node JS
PHP
JQuery
Python