What is the effect of an increase in the load for a DC motor?
Explain the effect of variable excitation on the behaviour of synchronous motor under constant load condition.
A motor has to exert power starting from zero and rising uniformly to 150 HP in 8 mins after which it works at constant power of 100 HP for 5 mins. The motor remains on no load for next 5 mins. The cycle again starts and repeats indefinitely. Determine suitable size of motor.
Why does my DC motor not start on no load?
DC series motor should never be started at no load. Justify.
Why does current decrease when voltage increases in a capacitor?
Illustrate Energy conservation in motor by load matching and operating in star mode.
Why does the resistance of insulators decrease with an increase in temperature? Answer : Actually, the resistance of **insulators** typically **increases** with an increase in temperature, not decreases. This is because insulators are materials that do not conduct electricity well. Let me ... case. If I misunderstood and you were asking about semiconductors specifically, let me know!...
Why does an increase in temperature decrease resistance?
Why does resistance decrease with an increase in temperature in semiconductors?
Why does resistance decrease with an increase in temperature?
What is the effect of a capacitor in a DC circuit?
What is the effect of inductance in a DC circuit?
What is the effect of self induction in a dc circuit ?
What effect does the induced voltage have on the current in a DC inductive circuit?
Why does the terminal potential difference of a battery decrease when the current drawn from it is increased?
Why does the emf of a battery decrease as it is used?
Why does the electric field inside a dielectric decrease?
When a uniform resistance wire is stretched till its length becomes four times does it resistance increase or decrease?
When a uniform resistance wire is stretched till its length becomes four times does its resistance increase or decrease?
What is the formula for RPM of a DC motor?
Explain with the help of a neat diagram the following methods of speed control for a DC series motor: (i) Field diverter method. (ii) Tapped field method.
Explain the necessity of a starter for a DC motor. State various types of DC motor starters.
State at least one function and the material used for the following parts of a DC motor.
Why back emf used for a dc motor? highlight its significance.
What is the effect of capacitor in DC?
What is the effect of inductor in DC circuit?
What is the effect of inductor connected in AC and DC circuit?
What is the effect of inductive reactance in an DC circuit?
What is the speed variation of the induction motor from no load to full load?
How does load affect the speed of an induction motor?
Why series motor cannot be started on no-load?
Why does the terminal voltage of cell decrease when current is drawn from it?
Why does Hall voltage decrease with temperature?
Do inductors increase or decrease voltage?
How can voltage increase but current decrease? Answer : Voltage can increase while current decreases in certain situations, especially when you are dealing with **resistance** and **power** in an electrical circuit. Here's how: 1. **Ohm's Law** ... high-voltage power lines, we see high voltage and low current to minimize energy loss over long distances....
Why does insulation resistance decrease when temperatures increase?
Which DC motor is used for?
Give one application each for AC and DC servo motor.
What is the effect of supply voltage on the performance of an induction motor?
Is AC DC a load line?
What is a DC load line?
Compare Horizontal axis and vertical axis wind machines on the basis of: (i) Power captured for the same tower height. (ii) Noise problem. (iii) Complexity of design and yaw mechanism (iv) Effect of fatigue arising from numerous resonances in structure.
Is a Hall effect sensor AC or DC?
What is DC load current?
Draw the phasor diagram for leading load of a transformer.
Draw the phasor diagram for lagging load of a transformer.
Draw the phasor diagram for resistive load of a transformer.
What is the effect of AC and DC on inductor?
What is the effect of inductance on DC current?
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