Swinburne test is conducted under which of the following condition? any of the above full load no load half load TRUE ANSWER : ? YOUR ANSWER : ?
What is the function of inter pole in DC generator? To neutralize the distortion of main field flux due to armature reaction. To serve the economical aspects. Both option B and C. To get a superior commutation. TRUE ANSWER : ? YOUR ANSWER : ?
Reversing the direction of rotation of split phase motors is done by All of these reversing the terminals of main winding. reversing the terminals of starting winding. interchanging the capacitor from starting winding to main winding or vice versa. TRUE ANSWER : ? YOUR ANSWER : ?
A DC cumulatively compounded motor delivers rated load torque at rated speed. If the series field is short-circuited, then the armature current and speed will increase and decrease respectively both decrease decrease and increase respectively both increase TRUE ANSWER : ? YOUR ANSWER : ?
A 10KVA auto transformer, turn ratio is 0.4. Find the power transferred inductively? 6 KVA 10 KVA 0 KVA 4 KVA TRUE ANSWER : ? YOUR ANSWER : ?
The armature voltage control is considered suitable for a DC motor driven at constant power. torque. current. speed. TRUE ANSWER : ? YOUR ANSWER : ?
The power factor of an induction motor operating at no load will have a value around 0.2 lead unity 0.9 lag 0.2 lag TRUE ANSWER : ? YOUR ANSWER : ?
In dc machine armature windings are placed on rotor because of the necessity for generation of voltage. commutation. electromechanical energy conversion. development of torque. TRUE ANSWER : ? YOUR ANSWER : ?
A DC series motor is running with a divertor connected across its field winding. If the divertor resistance is reduced then the speed of the motor will increase. remain unaltered. decrease. become execessively high. TRUE ANSWER : ? YOUR ANSWER : ?
Dynamic braking is employed to brake non reversing drive both 1 and 2 reversing drive None of these TRUE ANSWER : ? YOUR ANSWER : ?