- The magnetic flux of a transformer follows
Under construction.
- The magnetizing current in a transformer is rich in
Under construction.
- In a transformer zero voltage regulation is achieved at a load power factor which is of following ?
Under construction.
- The inductive reactance of a transformer depends upon
Under construction.
- A transformer has hysteresis loss of 30 W, at 240 V, 60 Hz. The hysteresis loss at 200 V, 50 Hz will be
Under construction.
- Distribution transformer has core losses
Under construction.
- In which transformer tertiary winding is used?
Under construction.
- Noise level test conducted on a transformer is a
Under construction.
- Auto transformer is preferred over an ordinary two winding transformer due to
Under construction.
- A shell type transformer is commonly used as it has
Under construction.
- The core used in high frequency transformer is ______________________ core.
Under construction.
- A transformer with an output voltage 2400 V, is supplied at 230 V. If secondary has 2000 turns,calculate the number of primary turns
Under construction.
- Keeping in view the requirement of parallel operation, which of the 3-phase connections given below are possible ?
Under construction.
- The inductive reactance of a transformer depends upon
Under construction.
- If P
_{1}and P_{2}be the iron and copper losses of a transformer on full load, find the ratio of P_{1}and P_{2}such that maximum efficiency occurs at 75 % of full loadIron loss, P_{i}= P_{1}, Cu loss at 75 % full load = x^{2}P_{c}= ( 75 / 100)^{2}P_{2}. For maximum efficiency we have P_{i}= x^{2}P_{c}

⇒ P_{1}/ P_{2}= 9 / 16 = 0.5625. - When a transformer winding suffers a short-circuit, the adjoining turns of the same windings experiences
Under construction.
- The density of transformer oil is around
Under construction.
- The flash point of transformer oil is usually
Under construction.
- The dielectric strength of transformer oil should not be less than
Under construction.
- What is the simplest transformer cooling arrangement?
Under construction.

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