- Explain the term self induced EMF with a neat diagram.
- The induced emf in the armature of a lap -wound four -pole dc machine having 100 armature conductors
- Self induced emf and Mutually induced emf
- Compare statically induced emf with dynamically induced emf on any four points.
- Define: 1) statically induced EMF 2) dynamically induced EMF
- Explain dynamic and static induced emf with neat diagram.
- If B is the flux density, I the length of conductor and v the velocity of conductor, then induced e.m.f. is given by?
- When the armature of a D.C. motor rotates, e.m.f. induced is
- What is the direction of the induced electric field?
- What is the direction of the induced current?
- How can we increase the induced current?
- Faraday's law of induced voltage
- What is the back EMF of a dc motor?
- What is the back EMF of the motor?
- Self induced voltage across an inductance
- Define natural, mechanical, forced and induced draught systems.
- What is the back EMF in Transformers?
- What is the back EMF?
- What is Phase sequence? Draw waveforms of 3 phase emf.
- What is back EMF of synchronous motor?
- The fractional-pitch used for eliminating 7th harmonic from the emf wave of an alternator is
- The back emf of synchronous motor depends on?
- What is the EMF equation of the transformer?
- What is back emf?
- Do AC induction motors have back EMF?
- What is back EMF in inductor?
- Emf definition
- Induced emf in the primary of transformer is equal to terminal voltage applied at primary
- The counter e.m.f. of a d.c. motor?
- It is required to measure the true open circuit e.m.f. of a battery. The best device is?
- The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is?
- In case of D.C. shunt motors the speed is dependent on back e.m.f. only because?
- What will happen if the back e.m.f. of a D.C. motor vanishes suddenly?
- List any two types of relays and contactors with their function used in AC locomotive.
- List any two types of fuels used in electrical power generation plants.
- List two types of oscillator, which generates frequency in RF range.
- When a conductor cuts magnetic flux, an emf is induced in the conductor. This is known as...
- E.m.f. of a Weston cell is accurately measured by?
- State the need of multistage amplifier. List the types of multistage amplifier and give two advantages of each type.
- Explain in brief cam. State the types of cam. List two applications.
- The induced emf in the armature of a wave wound 4-pole d.c. machine having 100 armature conductors
- List any two basic types of RAM.
- The emf induced in a coil is 1 volt when current in it changes from 0 to 100 mA in time 10mS. Its inductance...
- Development of Induced emf and Current
- (a) Define permeability. (b) Define MMF. (c) Define form factor of an alternating quantity. (d) Define frequency and time period of an alternating quality. (e) Define transformation ratio of transformer. (f) State the EMF equation of a 1 transformer and state the meaning of each term used. (g) Give two applications of single phase motors.
- Define the term electrical noise. List types of noises.
- List the types of ADCs. Explain working principle of any one type of ADC.
- Explain in brief the working principle of strain gauge. Define gauge factor and list out types of strain gauges.
- List the different types of frequency meters.
- State the function of a contactor in a power circuit of locomotive. List different types of it and state one application of each.