A certain amount of fuel can produce 10 quads of

84. A certain amount of fuel can produce 10 quads of energy. In how many days
will the fuel be totally consumed if it is used to satisfy a demand of 10 13
BTU/day at a power plant with and overall efficiency of 20 percent?
A. 190 B. 205 C. 195 D. 200

REGISTERED ELECTRICAL ENGINEERS PRE-BOARD EXAMINATION
MARCH 2013
PROFESSIONAL ELECTRICAL ENGINEERING SUBJECTS
85. What is the equivalent of the constant C in the ABCD constants for the
Nominal- T circuit of a transmission line for which R = 10 Ω, X
L
= 20 Ω, Y =
400 μs for each phase?
o
86. Which of the following ammeters is the most sensitive?
87. A transformer is to be used to match a secondary load impedance of 800 ohms
to a generator line impedance of 128 ohms. What should be the ratio of
transformation of the transformer for maximum power transfer?
88. TV Channel 2 has a frequency of 60 MHz What is the wavelength?
A. 50m B. 500m C. 0.5m D. 5m
Wavelength =
3𝑥10^8
60𝑥10^6
= ?𝒎
89. At a certain point of the system network the positive, negative and zero
sequence impedances are 0.25 p.u., 0.25 p.u. and 0.3 p.u., respectively.
The base MVA is 100. The voltage level at that point is 34.5 kV. Determine
the zero sequence current for a one-line ground fault.
90. A 1-phase, 220-V 50-A induction motor draws 10 kW of power. A 1-phase,
8-kVA synchronous motor is placed parallel with it in order to adjust the
power factor to unity. What must be the power factor of the synchronous
motor?

REGISTERED ELECTRICAL ENGINEERS PRE-BOARD EXAMINATION
MARCH 2013
PROFESSIONAL ELECTRICAL ENGINEERING SUBJECTS
tan∅new = 24.92
91. Brushes of dc machine are usually made of