3.4 Generation of Electricity Flashcards
Thermocouple harnesses are made from the same materials as the thermocouple so that.
Option A. mini junctions are not formed.
Option B. the resistance is not increased beyond limits.
Option C. they will not corrode
Mini junctions are not formed
Point A on the armature of the generator shown is producing.
Option A. minimum current.
Option B. zero current.
Option C. maximum current
Maximum current
A piezoelectric device generates electricity through.
Option A. friction.
Option B. light.
Option C. pressure
Pressure
A photozoidal cell produces electricity when subjected to.
Option A. light.
Option B. pressure.
Option C. heat.
Light
A thermocouple indicator is basically a type of.
Option A. millivoltmeter.
Option B. milliammeter.
Option C. milliohmeter
Millivoltmeter
A light/heat sensitive cell is a.
Option A. transistor.
Option B. diode.
Option C. transducer.
Transducer
The diagram shows a current carrying conductor (A) in a magnetic field. The conductor will move.
Option A. upwards.
Option B. sideways.
Option C. downwards
Downwards
A component that produces an output voltage due to incident light is called a.
Option A. liquid crystal.
Option B. solar cell.
Option C. light emitting diode
Solar cell
The flux density of a magnetic field is 1.5T. The length of the conductor in the field is 2 m and the speed of the conductor is 10 m/s. The EMF induced is.
Option A. 0.3 V.
Option B. 7.5 V.
Option C. 30 V
30V
A conductor is placed in a magnetised coil. What will happen?.
Option A. Nothing will happen unless the conductor is moved.
Option B. The conductor will move.
Option C. A force will be created
Nothing will happen unless the conductor is moved
The maximum output voltage from a basic single loop generator is when the loop is.
Option A. rotating anti-clockwise relative to the direction of the magnetic flux.
Option B. cutting maximum lines of magnetic flux.
Option C. at 45o to the magnetic flux
Cutting maximum lines of magnetic flux
