Magnetism and Electromagnetism When a solenoid is activated, the force that moves the plunger is a steady current a permanent magnetic field an electromagnetic field varying voltage a steady current a permanent magnetic field an electromagnetic field varying voltage ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is the unit of magnetic flux density? None of the listed here Weber Lumens Tesla None of the listed here Weber Lumens Tesla ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density increases remains the same doubles decreases increases remains the same doubles decreases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magneto-motive force (mmf) of a wire with 8 turns carrying three amperes of current? 2,400 At 240 At 24 At 2.4 At 2,400 At 240 At 24 At 2.4 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Fleming's left hand rule is used to find Polarity of a magnetic pole Direction of magnetic field due to current carrying conductor Direction of flux in a solenoid Direction of force on a current carrying conductor in a magnetic field Polarity of a magnetic pole Direction of magnetic field due to current carrying conductor Direction of flux in a solenoid Direction of force on a current carrying conductor in a magnetic field ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ? 63.38 N/Wb 6338 N/Wb 633.8 N/Wb 63380 N/Wb 63.38 N/Wb 6338 N/Wb 633.8 N/Wb 63380 N/Wb ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS