Explanation: SCIM stands for squirrel cage induction motor. SCIM rotor is made up of aluminum, copper bars. There are no armature conductors involved in it.

Explanation: Plugging is the best braking method among all braking techniques. In plugging the value of the armature current reverses and the mechanical energy is extracted. A very high braking torque is produced in case of plugging.

Explanation: IFOC stands for indirect field oriented control. DTC and IFOC are the techniques used for controlling the speed and torque of a 3-phase induction motor.

Explanation: When the current enters the positive terminal of an element it will always absorb the power and when the current leaves the positive terminal it will deliver the power. Power delivered is -30×8=-240 W.

Explanation: NENO stands for Neither even nor odd. The functions which are not the mirror image of the y-axis and nor symmetric about the origin are NENO functions.

Explanation: DC series motors are used where the high starting torque is required. At starting the torque produced by DC series motor is very high.

Explanation: The Star-Delta starting method is one of the best methods for the starting of the Induction motor. This method is cheaper and the line current in the star is 1÷3 times of in delta connection.

Explanation: Depending upon the temperature limits, insulating materials are classified into seven classes Γ, A, E, B, F, H, C. The insulation has the lowest temperature limit.

Explanation: Belt slip ring IM is preferred for the operation of Jaw crushers. A high starting is provided by the Belt ring IM. Slip rings are used to add external resistance.

Explanation: Capacitor run motor is a 1-Φ AC motor. The capacitor is used to provide a 90° phase difference between the currents of main and auxiliary winding.

Explanation: There are three types of stress that are Longitudinal stress, Volume stress, Tangential or Shear stress. Stress is the ratio of restoring force and cross-section area.

Explanation: Squirrel cage Induction motor is used for milling and grinding operations. SCIM has a rigid structure and high tolerating capability. It provides good running characteristics.

Explanation: Thermography is used to detect heat patterns. It uses an Infrared rays camera. This test is used to determine the conditions where electric motors are being used.

Explanation: Reluctance motor is used in recording instruments. It is used for many constant speed applications. The starting torque of the motor depends upon the rotor position.

Explanation: SCR is mounted on a heat sink. When temperature exceeded the rating of the SCR excess amount of heat is dissipated through the help of the heat sink.

Explanation: The output of a six-pulse converter consists of six pulses in one cycle. The output frequency of the six pulse converter is 6×supply frequency=6×10=60 Hz.

Explanation: R-L-C underdamped are leading power factor loads. They do not require any forced commutation technique. Anti-Parallel diodes help in the commutation process.

Explanation: Diode is uncontrolled, unidirectional power electronic device. When the voltage across the diode becomes positive it starts conduction otherwise remains off.

Explanation: Capacitor is used to make the R load commutating. It is used in parallel with the resistive load.

Explanation: The value of flux remains constant in Permanent magnet DC motor. The torque in the PMMC motor is directly proportional to the armature current.