WorksheetsTagEEsan ng Talino: CLINCHER
Total questions: 4
Worksheet time: 20mins
Name
Class
Date
1.
A natural waterfalls 50 meters high, consistently discharges 1.3 cubic meters per second. A mini-hydroelectric plant is to be constructed at the bottom of the waterfalls. Calculate the electric generator kW rating, assuming 90% mechanical to electrical conversion efficiency and water turbine design efficiency of 70%.
(a)
2.
A 13.8 kV/480 V, 10 MVA three-phase transformer has 5% impedance. What is the impedance in ohms referred to the primary?
(a)
3.
A coil has 6,000 turns of wire and a resistance of 380 ohms. The coil is rewound with the same quantity (weight) of wire, but has 13,400 turns. How many ohms will the new coil have?
(a)
4.
The starting winding of a single-phase motor is placed in
a)
ROTOR
b)
STATOR
c)
ARMATURE
d)
FIELD
100 %
