# The equivalent insulation resistance is

1.  125 MΩ

2.  0.125 MΩ

3.  1000 KΩ

4.   2.5MΩ

4

0.125 MΩ

Explanation :
No Explanation available for this question

# The equivalent insulation resistance is

1.  125 MΩ

2.  0.125 MΩ

3.  1000 KΩ

4.   2.5MΩ

4

0.125 MΩ

Explanation :
No Explanation available for this question

# Consider a unity feedback system whose open-loop transfer function is G(s)=K/s(s2+2s+2) The nyquist plot for this system is

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# What is the critical disruptive voltage for a 3- line operating at 110 kV which has conductor of 1.25 cm diameter arranged: in a 3.05 in Delta.? Assume air density factor of 1.07 and the dielectric strength of air to be 21 kV/M.

1.  90 kV

2.  87kV

3.  75 kV

4.  110kV

4

87kV

Explanation :
No Explanation available for this question

# For the certain unity feedback system G(s)= K/s(s+1)(2s+1)(3s+1)

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# A 1- over head line has two conductors of diameter 2 cm with a spacing 2 meter between centre. If the dielectric strength of air is 21 kV/cm, the line voltage for Which corona will commence on the line, Will be

1.  55 kV

2.  100.9 kV

3.  110.0 kV

4.  111.8 kV

4

111.8 kV

Explanation :
No Explanation available for this question

# The Nyquist plot of a system is shown in figure. The open-loop transfer function is G(s)H(s)=4s+1/s2(s+1)(2s+1) The number of poles of closed loop system in RHP are

1.  0

2.  1

3.  2

4.  4

4

2

Explanation :
No Explanation available for this question

# What is the corona loss of a 3-Φ line, 160 km long, conductor diameter 1.036 cm, 2.44 delta spacing, air temperature 260, corresponding to a barometric pressure of 72 cm, operating voltage 110 kV at 50 Hz. m =0.78

1.  322 kW

2.  792 kW

3.  800 kW

4.  841 kW

4

841 kW

Explanation :
No Explanation available for this question

# In the Bode-plot of a unity feedback control system, the value of phase of G(jω) at the gain cross over frequency is -1250.The phase margin of the system is

1.  -1250

2.  -550

3.  550

4.  1250

4

550

Explanation :
No Explanation available for this question

1.  -1250

2.  -550

3.  550

4.  1250

4