List of top Electrical Technology Questions on Motor Characteristics asked in CBSE CLASS XII

Write any two precautions to be taken while using an immersion heater.
Draw a labelled diagram of an Electric Mixer.
Draw a diagram showing inductance in an AC circuit with the voltage and current waveform.
Explain in brief the different types of cooling systems used for transformers.
What do you understand by organisational skills? Which organisational skills help an entrepreneur to become successful?
In a series RLC circuit, R indicates:
The voltage transformer is also known as ________. (Air core transformer Potential transformer)
Series testing leads are connected to the terminals of plug top of the water heater. The lamp is not glowing. This indicates ________. (Short circuit Open circuit)
Squirrel cage induction motor is cheaper than slip ring motor.
Capacitor is always connected in series with starting winding.
In DC motor, flux is directly proportional to armature current.
Universal motor works only with DC supply.
Three-phase induction motor works on the principle of ________. (Self-induction Mutual induction)
What is the recommended distance for connecting capacitors from soft starters?
How is the starting torque of an induction motor improved?
What does $R_a$ indicate in the voltage equation $V=E_{b}+I_{a}R_{a}$ of DC motor?}
DC shunt motor is used in
Speed and torque characteristic of DC motor is known as characteristic. (Electrical/Mechanical)
Shaded pole motors are made between . (frac125) HP to (frac16) HP / 3 HP to 10 HP
Write True/False :
(i) Manual handling causes over a third of all workplace injuries.
(ii) Maintenance cost of slip ring motor is less as compared to squirrel cage motor.
(iii) Always place transformer in a dry area.
(iv) The core of electromagnet is made up of soft iron or silicon steel lamination.
(v) Three-phase induction motors are used for domestic purposes.
(vi) DC series motor is used when high starting torque is required.