2 modul.

A cyclist goes from rest to 50 m/s in 5 seconds. What is the average acceleration? (2.12). *B = 10 m/s2. asdfasdfasdf.

A precession characteristic of a gyro is ues in turn and bank instruments (2.26). *C TRUE. edsfda.

What is Boyle´s Law? (3.12). *c= P is proportional to 1/V. sdfga.

A process where energy is not transfered to or from a gas is known as (3.15). *C Adiabatic. asdffsdfsda.

A block of ice melted into a liquid will take up (3.11). *C = less space. adfg.

Latent heat is the energy needed for (3.17). *C changing state of matter. asdfasdasdf.

latent heat is the (3.17). *B heat required to change the state of a body. sdfsdfdfs.

The width of a multi-mode fiber optics cable is grater than (4.5). *B) 10um. dfs.

When different signals are transmitted down a fibre optic core, are they distinguised by a (4.5). *C = different transmission angle. sdfdff.

If refractive index is higher the speed of light in material (4.3). *A is lower. asdfasdf.

What causes the light within the fiber optic cable to maintain the direction? (4.4). *C= the cladding around the fibers core. dsffvdf.

Sound waves are (5.2). *C = mechanical waves. sdfdsfsfd.

If a ray of light enters a fibre optic cable with a refractive index of 1,5 the speed of light is faster than (4.2). *A the material with refractive index 1.6. sfesdfsdfdsf.

A circular motion is (2.11). *A motion along curved path with constant radius. sdafasdfasdf.

What temperature scale is used with the combined gas law? (3.2). *C = KELVIN. asdasdf.

What is the difference between compound and mixture? (1.4). *C Chemical bonding properties and conductivity. sdfsdfsdf.

Is there chemical bond between substances in a mixture? (1.4). *B .NO. sdsdfsf.

Vector - the longer the arrow (2.2). *C the greater the FORCE. asdfsdf.

A vector is represented by (2.2). *A an arrow that points into the direction of force applied. asdf.

The centripetal force is decreased when (2.13). *A = radius is greater. dfsd.

Reflection is (4.2). *A = change of direction when light wave strikes different media. asdasd.

Static friction (2.27). *A = Depends on weight of the object and coefficient of starting friction. asdfcasd.

What medium has the lowest refractive index? (4.2). *A VACUUM. dsfsdf.

An aircraft flies 1350 nmiles in 2h 15 mins. What is the average speed (2.11). *C = 600 nmiles/hour. sazdfa.

What work is done if a force of 100 N moves a body 15 meters? (2.21). *B =1.5 kj. asdf.

As an object slides down a slope, its (2.24). *A = kinetic energy increases and its potential energy decreases. sedfsfd.

What is a hydrometer? (2.30). *C = Device for measuring specific gravity of liquids. ssdfdf.

Good streamlining of the fluids (2.33). *B = prevent turbulent conditions. sdafsdfsdf.

If the pressure of a gas is constant (3.13). *B = volume increases when temperature increases. dd.

Adiabatic compression is when (3.14). *B no heat is lost or gained. dfcfca.

In fiber optic transmitter source of light are (4.7). *B LED and laser diodes. sdf.

Sound is transmitted in (5.5). *C =Faster in solid matter than gases. dsdfsdf.

Light is a form of (4.2). *A electromagnetic radiation. sdfsdfsdf.

Doppler effect talks about (5.5). *A = different sound hearing when comes from approaching object or from departing object. asdfasf.

Two sound waves of the same frequency and amplitude are moving half a wavelenght out of phase with each other. What will be heard? (5.4). *A NOTHING. sdfsdf.

In a fiber optic cables for transmitting multi signals- for example in IFE system are (4.5). *A = multi mode. sdfsdfsd.

Precession in a gyro is (2.26). *B = Proportional to the magnitude of the torque applied. sdfgsdf.

The speed of sound in air at 15ºC is approximately (5.4). *A= 343 m/s. sdfsdfsdf.

Molecules of the same compound are held together by (1.5). *B = chemical bond. sdfsdf.

What is a covalent bond?. *A= When substances share their valence shells. sdfsdfs.

If a material is loaded excessively and is permanently deformed, it is said to be (2.5). *B strained. sdfsdf.

If a wave traveling to a point meets a wave travelling from that point, of equal frequency (5.4). *A = a standing wave is formed. sdfgsdf.

If you push an object with a force of 5 N for 10 m in 4 seconds, how much power is used? (2.21). *C = 12.5 watts. sedf.

Because of attenuation in fiber optics the type of cable is chosen mostly by (4.5). *B = distance required to travel. ddffddf.

Bernoulli principle talks about (2.33). *A = action of liquid passing through varying cross-section area. sdafcsdafc.

Detaily looking - when a liquid is heated, it expands (2.31). *A more than a solid. asdfsadf.

Which splice physically joints (welds) two fiber optics cables (4.6). *A Fusion splicing. sdfsdffsd.

Which statement is correct? (3.10). *C Gases are poorer conductors than liquids. dxFv.

What is pulley? (2.15). B = simple machine in a shape of wheel. sdfsdf.

Stress is given by (2.3). *B force per unit area. sdfsdf.

Center of gravity is the (2.3). *B Balance point of the aircraft. sdxfsd.

Force applied on a 50 cm long torque wrench to achieve 10 Nm of torque shall be (2.22). *A 20N. sdfsdf.

Intensity of sound waves (5.4). ( varies inversely as of distance from source). sadfasdf.

The mass of a proton equals the mass of a (1.2). *C = neutron. sdsdf.

There are solids, liquids, plasma and gases present in the universe and every unit of theirs occupy some space. This is called (1.4). *C mass. xdcsfvsdf.

What is the atomic number of an element? (1.4). *A = The number of protons in the atom. sdfgsdf.

What is the matter? (1.2). *C Is what all things are made of. dfd.

What determines an element's identity? (1.2). *A They can not be further broken down. sdf.

The maximum number of electrons in the first shell of an atom is (1.4). *A = 2. sdfsdf.

If an object in air is submerged in liquid or gas its mass will (2.7). *C remain the same. dfgv.

Bouyant force acts (2.7). *B on any body submerged in liquid. sdfsdf.

The pressure on the bottom of the container depends on (2.6). *B the height of the water in it. sdfsdf.

Acceleration involves (2.12). *A change in speed of movement. sdfg.

The SI unit of energy is the (2.21). *C Joule ( J ). dfdf.

Newton ( N ) is equal to (2.20). *C 1 kilogram meter per square second. sdfsdf.

Thermodynamics deals with (3.2). *A heat and other forms of energy. sdf.

Do only fluids have viscosity characteristics? (2.30). *C No, gases have this characteristics as well. sdfgsdf.

Where the cross-section area is decreasing it is called (2.33). *B converging duct. sdfsdf.

Total pressure is (2.34). *C Static plus dynamic pressure. sdf.

What is -28 degrees C on the Kelvin scale? (3.3). *A 245K. sdfs.

1 degree rise on the centigrade scale will cause a (3.2). *C 1.8 degree rise in Fahrenheit. sdfsdf.

Ideal gas law combines conditions such as (3.13). *C temperature, pressure and volume. sdxv.

Convection does not occur in (3.10). *A solids. sdfsdf.

Heat transfer is achieved (3.9). *B three different methods. sdffsd.

A process where volume does not change is (3.14). *A constant volume process. sdf.

Otto cycle is treated as (3.14). *C constant volume process. asdfasd.

Combustion stage of Otto cycle is done in (3.14). *C constant volume situation. sdfsdf.

Sound is (5.2). *A The series of disturbances. asdfsf.

Fiber optic cables suffer from electromagnetic influence. (4.4). *C False. sdf.

What is refractive index? (4.2). *A Speed of light in vacuum divided by speed of light in substance. sdf.

Light is a form of (4.2). *A electromagnetic radiation. dfgdsfg.

If the volume is constant the pressure will (3.13). *C increase when temperature increases. dxfv.

The receiver transforms: *C optical signal into electrical one. s.

a spring extends 7cm to the ground and back again 20 times a minute. What is the period?. *b) 3 seconds. s.

why rotor of a gyro stays in a same position while spinning at high velocity? (2.25). *b) Because of its rigidity. sdfsdf.

The difference between two pressures in combustion stage is (3.17). *a) Differential pressure. sdfsdf.