Electrical Principles Short A1

Calculate the Cosine of the angle.

• 0.564

• 0.789

• 37.86

• 56.25

What is the length of the Hypotenuse?

• 193

• 9.75

• 13.89

• 95

What is the Power used in a single phase circuit with a total resistance of  $6.2\Omega$  that draws a current of  $20.08A$  

• 2200W

• 2300W

• 2400W

• 2500W

The unit of measure for Capacitive Reactance is:

• Ohms

• Farads

• Henrys

• Amperes

A 200kg pack of conduit falls to the floor. What force will it hit the floor?

• 2000N

• 1962N

• 20.39N

• 141.4N

what class of lever is this?

• 1

• 2

• 3

• 4

One set of gears are connected together. The smaller cog has 28 teeth and the larger cog has 84 teeth. The smaller cog rotates 30 times per second. How many times per second will the larger cog rotate?

• 90

• 56

• 10

• 15

 $.$ 

A 10mm2 cooper conductor has a resistivity of 17.8x10-9 and is 68 meters long. What is the resistance of the conductor?

•  $0.12\Omega$  

•  $1.2m\Omega$  

•  $1200m\Omega$  

•  $1\Omega$  

 $8\Omega,\ 10\Omega,\ 5\Omega\ \&\ 7\Omega$  

What is the total resistance of the following resistors when wired in parallel: 

•  $4.25\Omega$  

•  $1.76\Omega$  

•  $0.57\Omega$  

•  $1.2\Omega$  

What is the generated emf when a 50mm long conductor cuts a magnetic field of 2.5 Teslas at a velocity of 0.7 m/s?

• 1.75mV

• 87.5V

• 1.75V

• 87.5mV