M3 Electrical Fundamentals Sub-Module No 9 (Quiz No:1)

Power

Quiz

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1. Referring to mechanical or electrical systems, ------ is defined as the rate of energy consumption or conversion within that system ?
   1.   Power
   2.   Work
   3.   Mechanical or electrical advantage
2. From the scientific discipline of physics, the fundamental expression for power is ?
   1.   P = Q / t
   2.   P = E / t
   3.   P = W/Q
3. What is the rate of doing work ?
   1.   Watt
   2.   Joule
   3.   Power
4. --------- of a component determines the rate at which heat is dissipated from the component to its surroundings ?
   1.   Size
   2.   Area
   3.   Color
5. Electrical equipment can only stand a certain amount of ------- production without damage ?
   1.   Watt
   2.   Power
   3.   Heat
6. The total power dissipated in both a series and parallel circuits is equal to the -------- dissipated in each resistor in the circuit ?
   1.   Sum of the power
   2.   Input
   3.   Output
7. When current flows through a resistive circuit, ------ is dissipated in the form of heat ?
   1.   Work
   2.   Energy
   3.   Power
8. The unit measurement for power is the --------, which refers to a rate of energy conversion of 1 joule/ second ?
   1.   Horsepower
   2.   Coulomb
   3.   Coulomb Watt (W)
9. If a circuit has a known voltage of 24 volts and a current of 2 amps, then the power in the circuit will be ?
   1.   48 W
   2.   96 W
   3.   1152 W
10. When higher wattage is required ---------- may be used ?
    1.   Carbon resistors
    2.   Wire-wound resistors
    3.   Thermistor