For high frequency application we use which transformer?

For overhead protection we use which transformer?

Which fault is caused by lightening and thuderstorm a. Line to line fault b. Single line to ground fault c. Double line to ground fault

Which modulation has higher data rates a.fm b.am c.qam d.qpsk

NTDC,

An active element is one which a. Supplies energy b. Absorbs energy c. Supplies energy and convert energy from one form to another

The ripple frequency in output of fullwave bridge rectifier is a. Half the input b. Twice the input c. Same as input

Less cost of delta connection over star connection a. No fourth neautral wire

Transmission lines usually use a.3 phase b.2 phase c. Single phase

K Tech Electrical,

In aerodynamic turbines which element is NOT there a.stator b.compressor c. Fuel intake system d.fans

Batteries used for electrical energy storage are a. Laclanche cells b. Edison cells c. Lead acid cells d.any of the above

A circuit breaker on detecting fault will a. Open b. Close c. Open and trigger the alarm

If we have two nodes A and B and Vab is the potential difference between these nodes then which node is called reference node a.node A b.node B c. Ground node

To have variable speeds we use a. Induction motor b. Traction motor c. Shunt motor

ROC converges if poles and zeros lie inside a. Origion b. Z=1

Period of infinite continuous fourier series a. N b. N+M c.infinite