Difference Between Goals and Objectives

 
Goals vs Objectives

When you have something you want to accomplish, it is important to set both goals and objectives. Once you learn the difference between goals and objectives, you will realize that how important it is that you have both of them. Goals without objectives can never be accomplished while objectives without goals will never get you to where you want to be. The two concepts are separate but related and will help you to be who you want to be.

Definition of Goals and Objectives
Goals ‘“ are long-term aims that you want to accomplish.
Objectives ‘“ are concrete attainments that can be achieved by following a certain number of steps.
Goals and objectives are often used interchangeably, but the main difference comes in their level of concreteness. Objectives are very concrete, whereas goals are less structured.

Remembering the Differences between Goals and Objectives
When you are giving a presentation to a potential or current employer, knowing the difference between goals and objectives can be crucial to the acceptance of your proposal. Here is an easy way to remember how they differ:
Goals ‘“ has the word ‘go’ in it. Your goals should go forward in a specific direction. However, goals are more about everything you accomplish on your journey, rather than getting to that distant point. Goals will often go into undiscovered territory and you therefore can’t even know where the end will be.

Objectives ‘“ has the word ‘object’ in it. Objects are concrete. They are something that you can hold in your hand. Because of this, your objectives can be clearly outlined with timelines, budgets, and personnel needs. Every area of each objective should be firm.

Measuring Goals and Objectives
Goals ‘“ unfortunately, there is no set way in which to measure the accomplishment of your goals. You may feel that you are closer, but since goals are de facto nebulous, you can never say for sure that you have definitively achieved them.

Objectives ‘“ can be measured. Simply phrase your objective in the form of a question. For example, ‘I want to accomplish x in y amount of time’ becomes ‘Did I accomplish x in y amount of time?’ This can easily be answered in a yes or no form.

Examples of Goals and Objectives
Goals ‘“ I want to be a better ball player. I want to learn more about Chinese history. I want to maximize my professional performance.
Objectives ‘“ I want to memorize the periodic table before my next quiz. I want to increase my sales by 10% this month. I want learn to play ‘Freebird’ on the guitar.

Summary:
1. Goals and objectives are both tools for accomplishing what you want to achieve.
2. Goals are long term and objectives are usually accomplished in the short or medium term.
3. Goals are nebulous and you can’t definitively say you have accomplished one whereas the success of an objective can easily be measured.
4. Goals are hard to quantify or put in a timeline, but objectives should be given a timeline to be more effective.

Difference Between AC and DC Motor

AC vs DC Motor 

An electromechanical device converts electrical energy to mechanical energy. AC motor is an electromechanical device that works on AC electricity while the DC motor works on DC electricity.

More about AC motor

An AC motor consists of two main parts a rotor, a component that rotates, and a stator, which is stationary. Both have coil windings to create a magnetic field and the repulsion of the magnetic field creates the rotor to move. The current is delivered to the rotor through slip rings, or permanent magnets are used. The kinetic energy of the rotor delivered to shaft connected to the rotor and the torque generated act as the driving force of the machinery.

There are two main types of AC motors. Induction motor, which runs more slowly than the frequency of the source, is the first type. The synchronous motor is designed to avert this effect of induction; therefore runs at the same frequency or a sub-multiple of the frequency.

AC motors can produce a large torque. Because of the power source used, it can be designed to draw large amounts of power. Power mains can supply very large currents required for the operation of the heavy duty motors. Most common AC motors use the squirrel cage rotor, which is found almost in all domestic and light industrial AC motors. Most domestic appliances like a washing machine, dishwasher, standalone fan, record player, etc. use some variant of a squirrel cage rotor.

AC motors are designed for three phase, two phase, and single phase power sources. Depending on the requirement the usage of the motor type varies.

More about DC motor

Two types of DC motors are in use; they are the Brushed DC electric motor and Brushless DC electric motor. The fundamental physical principle behind the operation of DC and AC motors are the same.

In brushed motors, brushes are used to maintain electrical connectivity with the rotor winding, and internal commutation changes the polarities of the electromagnet to keep the rotational motion sustained. In DC motors, permanent or electromagnets are used as stators. In a practical DC motor, the armature winding consists of a number of coils in slots, each extending for 1/p of the rotor area for p poles. The number of coils in small motors may be as low as six, and it may be as high as 300 in large motors. The coils are all connected in series, and each junction is connected to a commutator bar. All coils under the poles contribute to torque production.

In small DC motors, the number of windings is low, and two permanent magnets are used as the stator. When higher torque is needed the number of windings and magnet strength are increased.

The second type is brushless motors, which has permanent magnets as the rotor and electromagnets are positioned in the rotor. A high power transistor charge up and drives the electromagnets.

What is difference between AC motor and DC motor?

• AC motor works on AC electricity while DC motor works on DC electricity.

• General DC motors deliver less torque power than the AC motors.

• AC motor requires a starter mechanism, but the DC motors do not need a starter mechanism.

• DC motors are single phase motors whereas AC motors are both 1 and 3 phases.

Difference Between LCD and LED Televisions

LCD vs LED Televisions

The LCD television is a flat-panel television which utilizes a Liquid Crystal Display technology. It has two layers of glass which are polarized and stuck together. The liquid crystals are held in one of the layers. These liquid crystals pass, or block the light, to produce images on the screen when the electric current passes through it. However, the crystals do not produce their own light. The light comes from the series of fluorescent lamps at the back of the screen. There are millions of shutters arranged in a grid, which open and close to release and trap some of the light that is not needed to create images. Then each shutter is paired with a colored filter which produces a sub-pixel. These are so small, that when they combine, they create a single pixel, which appears to be a single spot of color on the screen. With the help of the fluorescent lamps, the images created by the liquid crystals become visible to the viewer. LCD television produces high image quality. They can be made very thin, which makes them less space-consuming, and the user can hang them anywhere. This makes them appealing to buyers. LED TV’s are actually very much like LCD TV’s. They also have a flat-screen which utilizes Liquid Crystal Display technology. The only difference is their source of light, which is at the back of the screen. The LCD TV uses fluorescent lamps, and the LED TV uses LED (Light Emitting Diodes). There are two types of LED backlighting. One is referred to as Edge lighting, and the other is called Full-Array lighting. With the Edge lighting, the series of diodes are arranged along the outside edges of the screen. When there is power, the light is distributed across the screen. Alternatively, in Full-Array lighting, there are several rows of diodes behind the entire surface of the screen. They provide more control over brightness and dimming, because the diodes can be turned on and off independently. LED TV’s are LCD TV’s with a new backlight system. They are newly developed for LCD’s, because Light Emitting Diodes are said to give more balance in color saturation, and use less power than the fluorescent lamps. LED TV’s are the newest version, and that’s why they are currently more expensive than the standard LCD TV’s.
Summary: LED TV’s are still LCD TV’s. They are just considered to be the newer LCD TV version because of the new backlight system used. The LED TV uses Light Emitting Diodes, while the standard LCD TV uses fluorescent lamps. Although they both still use Liquid Crystal Display technology. The main difference is the part behind their screen, which is the backlight.