Give properties and uses of silicon and nickel iron alloys, Electrical Engineering

Give the properties and uses of silicon iron alloy and nickel iron alloy.

Silicon Iron alloy: Pure iron has low resistivity that results in higher eddy current losses. These losses can be minimized through increasing the resistivity of the material that is achieved through adding 1 to 4 percent of silicon to iron. Silicon raises the electrical resistivity of iron. This decreases hysteresis loss. The magnetostriction consequence is also decreased. Silicon also enhances resistance to corrosion and oxidation and raises hardenability.

Silicon Iron alloy is utilized in the form of thin sheets termed as laminations. These laminations are used in transformers, large turbo- generators and small machines.

Nickel Iron alloy: A group of iron alloys having between 40 to 90 percent nickel have much higher permeabilities at lower losses and low flux densities than ordinary iron. The significant alloys are mumetal and permalloy. Mumetal has lower permeability but higher resistivity. Addition of small amounts of another element to nickel iron alloys enhances their magnetic properties. Nickel enhances strength, toughness and resistance to fatigue. This also lowers the critical cooling rate and therefore increases hardenability.

Nickel Iron alloy is broadly used in transformer cores and loading coils instrument transformers, magnetic circuits of instruments, for telephone circuits, for magnetic screens of electronic equipments.

Posted Date: 5/18/2013 6:51:36 AM | Location : United States

Related Discussions:- Give properties and uses of silicon and nickel iron alloys, Assignment Help, Ask Question on Give properties and uses of silicon and nickel iron alloys, Get Answer, Expert's Help, Give properties and uses of silicon and nickel iron alloys Discussions

Write discussion on Give properties and uses of silicon and nickel iron alloys
Your posts are moderated
Related Questions
DAD Double Add Instruction The contents of register  R P are added  to the  contents  of HL register pair  and results of addition is stored  in HL register pair. R P   may b

Explain Dual Slope ADCs Dual slope ADCs make use of a capacitor connected to a reference voltage. The capacitor voltage begins at zero and is charged for a set time through the

Derive the mathematical expression for steady state error of first order system with unit ramp signal. Discuss the following - proportional cum integral control - proporti

Subtract Contents of Memory and Borrow from Accumulator The contents of the  memory  pointed  by the HL register  pair  and the borrow  flag are subtracted from the  contents

LT Metering or Low Tension Metering The subsequent types of meters are generally used for LT consumers: Whole Current Meters i)   Single phase meters ii)   3-phase

What are CU and NEU in 8087? CU-Control unit NEU- Numeric extension unit. The numeric extension unit implements all the numeric processor instructions whereas the control un

Input Output Operations Many times microprocessor has to  accept data  from input port and send data to  output  port to  interact with the  real world. Input  port is  tri st

How many interrupts does 8085 have, mention them The 8085 has 5 interrupt signals; they are INTR, RST7.5, RST6.5, RST5.5 and TRAP

Question: (a) The forward path transfer function of a unity feedback control system is given by: (i) Draw the labelled block diagram representation of the control system.

Calculations of sending line voltage