What is a quanta made up of?
Why Low Voltage winding near core of the Transformer?
Why is auxiliary winding used?
Why use 3 winding transformer?
Why field rheostat is kept in minimum position while armature rheostat at maximum position?
In the motors starting purpose why the armature rheostats at maximum position while the field rheostat is kept in minimum position?
Why is it called armature?
What is the difference between auxiliary winding and main winding?
What is the difference between a 2 winding and 3 winding transformer?
Write the armature current and voltage relationship of a Separately excited DC Generator.
Why is it called pull-up resistor?
Why use a pull up resistor?
What is stator and armature?
Define transfer time and back up time of UPS.
A plant consists of two 10 MVA generators of reactance 18% each and two 5 MVA generators of 12% each. All are connected to bus bar to supply a load through three step up transformers of 8 MVA each having reactance of 8%. Determine fault MVA on HV side of any one transformer.
Explain the experimental set-up for the Newton’s rings formation with suitable diagram. Write conditions for dark and bright rings.
What is the difference between step-up and step-down transformers?
What is the difference between a step-up and step-down transformer?
What is the difference between pull-up and down resistors?
Explain the conditions for setting up negative phase sequence currents in an alternator. Draw the protective scheme to detect them and operate the CB.
What is step down and step up?
What is the difference between step up and step down cycloconverter?
What is a step up and step down cycloconverter?
What is the difference between step up and step down cycloconverters with their application?
What are the key differences between a step-up and a step-down transformer?
State advantages of short pitch winding over full pitch winding in alternators.
What is the function of field winding in a DC Machine?
What is the role of insulation in the stator winding of an induction motor?
What is winding in a motor?
What is rotor winding?
What is another name for auxiliary winding?
How does an autotransformer differ from a two-winding transformer?
Which winding is better, copper or aluminium?
Explain the dimmer by using a two-winding transformer.
How many winding in transformer?
What is the significance of armature reaction?
What is the principle of armature?
What are the two major methods of minimizing the effects of armature reaction?
What is the best way of minimizing eddy currents in an armature?
Define armature reaction in an alternator. Explain the effect of armature reaction at various power factors of loads of alternator.
State any four advantages of having stationary armature in case of three phase alternator. Answer : In a three-phase alternator, having a stationary armature (i.e., the armature is fixed and the rotor rotates) provides several advantages: 1. **Simplified Design**: A stationary ... seen in machines with rotating armatures. This leads to lower maintenance requirements and longer operational life....
What type of material is used to make the armature core?
What is the significance of lamination in the armature?
What is the significance of air holes in the armature?
What is a motor armature?
What is an armature in a motor?
What is an armature coil?
How does armature reaction affect machine performance?
What is armature reaction in DC machines?
what is meant by armature reaction?
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