In a string of suspension insulators, the voltage distribution across the different units of a string could be made uniform by the use of a grading ring, because it

1.  forms capacitances with link-pins to carry the charging current from link pins

2.  forms capacitances which help to cancel the charging current from link pins

3.  increases the capacitances of lower insulator units of cause equal voltage drop

4.   decreases the capacitances of upper insulators units to cause equal voltage drop

4

forms capacitances which help to cancel the charging current from link pins

Explanation :
No Explanation available for this question

The system shown in the given figure has a unit step input. In order that the steady state error is 0.1, the value of K required is

1.  0.1

2.  0.9

3.  1.0

4.  9.0

4

9.0

Explanation :
No Explanation available for this question

For a unit step input, a system with forward path transfer function H(s)=(s+5), has a steady state output of

1.  0

2.  0.5

3.  0.2

4.  0.03

4

0.2

Explanation :
No Explanation available for this question

A three phase over head transmission line has its conductors horizontally spaced with spacing between adjacent conductors equal to `d'. If now the conductors of the line are rearranged to form and equilateral triangle of sides equal to d , then

1.  average capacitance and inductance will increase

2.  average capacitance will decrease and inductance will increase

3.  average capacitance will increase and inductance will decrease

4.  surge impedance loading of the line increases

4

average capacitance and inductance will increase

Explanation :
No Explanation available for this question

Consider a system shown in the given figure U(s) -->2/s --> C(s) If the system is disturbed so that C(0) = 1, then C (t) for a unit step input will be

1.  1 +t

2.  1-t

3.  c

4.  1-2t

4

c

Explanation :
No Explanation available for this question

For a 500 Hz frequency excitation, a 50 km long power line will be modelled as

1.  short line

2.  Medium line

3.  long line

4.   data insufficiency for decision

4

long line

Explanation :
No Explanation available for this question

If in a short transmission line, resistance and inductance are found to be equal and regulation appears to be zero, then the load will

1.  have unity power factor

2.  have zero power factor

3.  be 0.707 leading

4.  be 0.807 leading

4

Explanation :
No Explanation available for this question

What will be the closed loop transfer function of a unity feedback control system whose step response is given by c(t)=K [1 - 1.66e-8t sin (6t + 37°)]

1.  100K/s2+16s+100

2.  10K/s2+16s+100

3.  K/s2+16s+100

4.  10K/s2+8s+10

4

100K/s2+16s+100

Explanation :
No Explanation available for this question

What will be the closed loop transfer function of a unity feedback control system whose step response is given by c(t)=K [1 - 1.66e-8t sin (6t + 37°)]

1.  100K/s2+16s+100

2.  10K/s2+16s+100

3.  K/s2+16s+100

4.  10K/s2+8s+10

4

100K/s2+16s+100

Explanation :
No Explanation available for this question

1.  t u(t)

2.  2t u

3.  3t u (t)

4.  4t u (t)

4