A hysteresis Motor Is not a self-starting motor Can not be run in reverse speed Is a constant speed motor Need DC excitation TRUE ANSWER : ? YOUR ANSWER : ?
What will be the value of current (in A) in a 50 cm long air-core solenoid, if the value of the magnetic field at the center of the solenoid is 5 mT and the solenoid has 300 turns? 8.25 5.63 4.36 6.63 TRUE ANSWER : ? YOUR ANSWER : ?
LED lamp have a general life expectancy of 50000 hrs 1000 hrs 5000 hrs 15000 hrs TRUE ANSWER : ? YOUR ANSWER : ?
A house has 5 fans of 70 W each that operates for 16 hours a day and one washing machine of 2000 W that operates for 1 hours per day in the month of June. What is the energy consumption(in kWh) of the house in the month of June? 228 235.6 350 486.6 TRUE ANSWER : ? YOUR ANSWER : ?
In a split-phase Motor The starting winding is connected through a centrifugal switch The running winding is connected through a centrifugal switch Both starting and running windings are connected through the centrifugal switch The centrifugal switch is used to control the supply voltage TRUE ANSWER : ? YOUR ANSWER : ?
Determine the reluctance (in Amp-turns/Wb) of a coil, when the flux through the coil is 15 Wb and the produced MMF is 30 Amp-turns 4 1 2 3 TRUE ANSWER : ? YOUR ANSWER : ?
Determine the voltage (in V) of a battery connected to a parallel plate capacitor (filled with air) when the area of the plate is 10 square centimeters, the separation between the plate is 5 mm and the charged stored on the plate is 20 pC 11.3 10.3 12.3 14.3 TRUE ANSWER : ? YOUR ANSWER : ?
What will be the value of average power (in Watt) of a sinusoidal voltage applied across a series circuit is 20 sinωt V and the current flowing the circuit is 10 sin(ωt + 60)A? 100 50 80 60 TRUE ANSWER : ? YOUR ANSWER : ?
The ripple factor is Peak Value/DC Value RMS Value/Peak Value Peak Value/RMS Value RMS value/DC Value TRUE ANSWER : ? YOUR ANSWER : ?
The speed of the ceiling fan is about Upto 10 RPM Upto 10000 RPM Upto 450 RPM Upto 200 RPM TRUE ANSWER : ? YOUR ANSWER : ?