UNIT-IV 1 Mark questions
... 14. A 220 V shunt motor develops a torque of 54 N-m at armature current of 10 A.The torque produced when the armature current is 20 A, is (a) 54 N-m (b) 81 N-m (c) 108 N-m (d) None of the above 15. The d.c. series motor should never be switched on at no load because (a) the field current is zero ...
... 14. A 220 V shunt motor develops a torque of 54 N-m at armature current of 10 A.The torque produced when the armature current is 20 A, is (a) 54 N-m (b) 81 N-m (c) 108 N-m (d) None of the above 15. The d.c. series motor should never be switched on at no load because (a) the field current is zero ...
Overview of Project
... – Eliminates threats to human lives in a battlefield when equipped with a gun – Home/Business Security – Recreational ...
... – Eliminates threats to human lives in a battlefield when equipped with a gun – Home/Business Security – Recreational ...
Chapter 2 Power Generation
... creates the rotor’s magnetic field, is called the exciter, and the coil on the rotor is called the field. • Most generators use slip rings to complete the circuit between the stationary exciter voltage source and the rotating coil on the rotor where the electromagnet produces the north and south pol ...
... creates the rotor’s magnetic field, is called the exciter, and the coil on the rotor is called the field. • Most generators use slip rings to complete the circuit between the stationary exciter voltage source and the rotating coil on the rotor where the electromagnet produces the north and south pol ...
Modeling of the Starting Performance of Large Solid-Pole Synchronous
... pole motors are a special category of large motors that are very popular in industrial systems. The solid pole is made of solid pieces of forged steel, which provides high mechanical strength for high speed rotating equipments. Compared to the traditional synchronous motors with laminated rotors, wh ...
... pole motors are a special category of large motors that are very popular in industrial systems. The solid pole is made of solid pieces of forged steel, which provides high mechanical strength for high speed rotating equipments. Compared to the traditional synchronous motors with laminated rotors, wh ...
OPTIMAL EFFICIENCY BASED PREDICTIVE CONTROL OF
... robustness, cheapness and ease of maintenance, when used with a field oriented control scheme, the induction machine is the most widely used electrical machines. The usually used direct field oriented control methods keeps rotor flux at constant rated value and ignores the machine losses. Consequent ...
... robustness, cheapness and ease of maintenance, when used with a field oriented control scheme, the induction machine is the most widely used electrical machines. The usually used direct field oriented control methods keeps rotor flux at constant rated value and ignores the machine losses. Consequent ...
MN2321202125
... In DC Commutator motor, the current polarity is reversed by the commutator and the brushes, but in the brushless DC motor, the polarity reversal is performed by semiconductor switches which are to be switched in synchronization with the rotor position. Besides the higher reliability, the missing com ...
... In DC Commutator motor, the current polarity is reversed by the commutator and the brushes, but in the brushless DC motor, the polarity reversal is performed by semiconductor switches which are to be switched in synchronization with the rotor position. Besides the higher reliability, the missing com ...
Slip power recovery systems When are Wound rotor motors
... wasted in the variable resistance. For Cases 2 and 3, the energy savings relative to the WRIM case are calculated in the table. For a mill motor rated at 5000kW, running at 80 per cent speed, the power saving using the SPR drive, Case 3, is 970kW. Assuming two motors as in the 10,000kW mill example, ...
... wasted in the variable resistance. For Cases 2 and 3, the energy savings relative to the WRIM case are calculated in the table. For a mill motor rated at 5000kW, running at 80 per cent speed, the power saving using the SPR drive, Case 3, is 970kW. Assuming two motors as in the 10,000kW mill example, ...
Behavior-Based Robotics
... recommended voltage range for best efficiency of the motor. Lower voltages will (usually) turn the motor, but will provide less power. Higher voltages are more tricky; they increase power output at the expense of the operating life of the motor ( the more you rev your car engine, the sooner it w ...
... recommended voltage range for best efficiency of the motor. Lower voltages will (usually) turn the motor, but will provide less power. Higher voltages are more tricky; they increase power output at the expense of the operating life of the motor ( the more you rev your car engine, the sooner it w ...
All Motors - Franklin Electric Australia
... Insulation resistance varies very little with rating. Motors of all HP, voltage, and phase rating have similar values of insulation resistance. Table 33 is based on readings taken with a megohm meter with a 500VDC output. Readings may vary using a lower voltage ohmmeter, consult Franklin Electric if ...
... Insulation resistance varies very little with rating. Motors of all HP, voltage, and phase rating have similar values of insulation resistance. Table 33 is based on readings taken with a megohm meter with a 500VDC output. Readings may vary using a lower voltage ohmmeter, consult Franklin Electric if ...
Stepper motors
... In step motor rotates step by step , because of this we can divide the pot partially to determine the each step .It means each step has a voltage value. ...
... In step motor rotates step by step , because of this we can divide the pot partially to determine the each step .It means each step has a voltage value. ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... Design of Power Supply for Three-Phase Bearingless Switched Reluctance Motor Based On Spwm SPWM (Sine wave Pulse Width Modulation) technique in driving power of BSRM is a effective way to achieve this [6-8]. The high frequency and power ultrasonic sinusoidal power supply can make the motor work eff ...
... Design of Power Supply for Three-Phase Bearingless Switched Reluctance Motor Based On Spwm SPWM (Sine wave Pulse Width Modulation) technique in driving power of BSRM is a effective way to achieve this [6-8]. The high frequency and power ultrasonic sinusoidal power supply can make the motor work eff ...
AC motor
An AC motor is an electric motor driven by an alternating current (AC). The AC motor commonly consists of two basic parts, an outside stationary stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside rotor attached to the output shaft producing a second rotating magnetic field. The rotor magnetic field may be produced by permanent magnets, reluctance saliency, or DC or AC electrical windings.Less commonly, linear AC motors operate on similar principles as rotating motors but have their stationary and moving parts arranged in a straight line configuration, producing linear motion instead of rotation.