How many watts does a 2.5 hp motor use?
How many watts does a 2.5 hp motor use?
1,864.25 watts
How many watts is a 2hp Aircon?
The KwH consumption of air conditioners is dependent on the HP. A 2.5 HP aircon will use about 2,700 watt, while an aircon unit with 0.5 HP will use 600 watt.
Why transformer is rated in kVA not in kW?
Copper losses (I²R) depends on current which passing through transformer winding while Iron losses or core losses or Insulation losses depends on Voltage. That’s why the transformer rating may be expressed in VA or kVA, not in W or kW.
Why generator is rated in kVA and motor in kW?
If we connect inductive or capasitive load (When power factor is not at least unity), The output would differ than as there are losses occurs due to low power factor. For this reason, KVA is an apparent power which does not take in to account the PF (Power factor) instead of KW (Real Power). And kVA = KW / Cos θ.
Why neutral is grounded in Transformers?
Neutral earthing resistors are used to limit the fault current in transformers When a phase to earth occurs, the fault current is limited only by the soil resistance. This current, which can be very high, can damage the windings.
Can transformer work on DC supply?
A transformer is a device which step-up or step-down the level of AC current or voltage without changing the primary (i.e. input source) frequency. Transformer only works on AC and can’t be operated on DC i.e. it has been designed to be operated only and only on alternating current and voltage.
Why are there no DC transformers?
As mentioned before, transformers do not allow DC input to flow through. This is known as DC isolation. This is because a change in current cannot be generated by DC; meaning that there is no changing magnetic field to induce a voltage across the secondary component.
Why transformers are not used in DC supply?
Direct current(DC) has no time varying field because current is constant as well as there is no relatively motion between coil and core(magnetic circuit) of the transformer. Transformer fails to transfer power from primary to secondary. Thus DC supply is not used for transformer.
What is not possible in transformer?
also, we cannot use DC current because Dc current is constant current and hence there will be no mutual induction takes place and the transformer won’t work hence DC is not possible in the transformer. Regards. Aakash EduTech Pvt.
What will happen if we give a DC input to a transformer?
When a dc supply is provided to the transformer primary no self induced emf will be generated (no back emf). Therefore heavy current will flow in the transformer primary winding which may result in burning down the transformer primary winding.
What happens if you connect DC to AC?
If accidentally AC line touches the DC line connected to the electronic circuit and components, the result may be bad smell smoke, flames or even worse. In case of AC components when DC connected to it, it may not work properly (that’s why a transformer can’t be operated on DC voltage) or even start to smoke and burn.
What would happen if a transformer is connected to a DC supply Examveda?
Hence, the transformer will not work. When transformer is connected to dc supply, steady state current start flowing through the winding. in case of dc supply self inductance is zero hence large current flows through the primary winding which results transformer get damaged.
Which of the following loss in a transformer is zero even at full load?
Friction losses
Which of the following is not a part of transformer installation?
Which of the following is not a part of transformer installation? Explanation: Conservator, breather, Buchholz relay are the parts which are much important in transformer construction in order to maintain temperature of the transformer and to work transformer with good efficiency.
Which part will surely tell that given motor is DC motor and not an AC type?
Commutator
How can you tell if a motor is AC or DC?
Look for the stator core construction and rotor. If there is no commutator, then it is a AC motor. If there is a commutator and brushes, it may be either a DC motor or an AC commutator motor (Universal motor).