SSC JE EE Technical Quiz 3

A string insulator has 6 units. The voltage across the bottom most unit is 25% of the total voltage. The string efficiency is:

The insulation resistance of the case is 4 MΩ for 100 km line cable. The value of insulation resistance of 10 km line cable.

In a superheater of a thermal power plant

1. Temperature raises

2. Pressure decreases

3. Pressure increases

4. Pressure remains unchanged

Which of the fallowing option is correct?

If a system has its two poles on the negative real axis and one-pair of poles lies on jω axis, then the system is

What is the unit impulse response of a first order system having transfer function  ?

What will be the bandwidth, if a system is to follow arbitrary accurately ?

For a constant gain k, the log magnitude curve in Bode plot is

Why is the DC motor preferred over AC motor?

If the Back EMF of DC motor vanishes then

For a given value of an average speed, increase in duration of stops causes: