EE Mockboard 2 Flashcards by Pauline Peralta

Refers to the system of allowing any qualified person the use of transmission, and/or distribution system, and associated facilities subject to the payment of transmission and/or distribution retail wheeling rates duly approved by the ERI.
A. Retail Competition
B. Retail Access
C. Open Access
D. Electricity access

Open Access

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The transformer core is laminated in order to
A. Simplify its construction
B. Minimize eddy current loss
C. Reduce cost
D. Reduce hysteresis loss

Minimize eddy current loss

Pag hysteresis: magnetization
Pag eddy: lamination

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Two capacitors of equal capacitance C are connected in series. The combination is connected in parallel with another capacitor C. What is the equivalent capacitance:
A. 3/2 C
B. 2/3 C
C. 4/3 C
D. 3/4 C

3/2 C

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Which among these is the first microprocessor?
A. Isro
B. Intel
C. Cyrix
D. Elbrus

Intel

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How much voltage is used for voltage flash memory?
A. 9 V
B. 6 V
C. 12 V
D. 24 V

6 V

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Which of these is NOT a simplex type of electronic communication?
A. TV broadcasting
B. Facsimile or fax
C. Paging services
D. Telephone

Telephone

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A charged capacitor and an inductor are connected in series. At time t = 0 the current is zero, but the capacitor is charged. If T is the period of the resulting oscillations, the next time after t = 0 that the current is a maximum is:
A. T
B. T/4
C. T/2
D. 2T

T/4

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The primary disadvantage of FM in AM is
A. FM has a greater bandwidth than AM
B. Noise immunity
C. Excessive use of spectrum space
D. greater capture effect

Excessive use of spectrum space

Pag AM: Noise Susceptibility or Noise immunity

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27 is the device function number for this relay.
A. Undervoltage relay
B. Overvoltage relay
C. Distance relay
D. Directional power relay

Undervoltage relay

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If both the plate area and the plate separation of a parallel plate capacitor are doubled, the capacitance is
A. doubled
B. halved
C. unchanged
D. quadrupled

unchanged

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The changes in volume of transformer cooling oil due to variation of atmospheric temperature delay ring day and night is taken care by which part of the transformer?
A. conservator
B. bushing
C. breather
D. buchholz relay

conservator

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Which of the following will you connect to make a galvanometer into a voltmeter?
A. a high resistance in parallel
B. a high resistance in series
C. a low resistance in series
D. a low resistance in parallel

a high resistance in series

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Which of the following motors is generally used in toys?
A. Reluctance motor
B. Hysteresis motor
C. Shaded-pole motor
D. Two-value capacitor motor

Shaded-pole motor

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The current flowing in the armature of a dc motor is
A. ac
B. dc
C. ac as well as dc
D. transients

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Tesla is the unit of
A. magnetic induction
B. self-inductance
C. magnetic flux
D. None of these

magnetic induction

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The voltage applied across an electric press was reduced by 50%. The power consumed by the press will be reduced to
A. 25%
B. 50%
C. 60%
D. 75%

25%

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The IRR of the Anti-Obstruction of Power Lines Act states that the utility, for maintenance and operational purposes, shall have the right to trim/prune or remove non tall growing plants approaching within ______ meter/s zone from the pole/structure and at a height deemed appropriate by the utility.
A. 10
B. 1
C. 2
D. 3

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Nine identical wires each of diameter d, and length L, are connected in series. The combination has the same resistance a single similar wire of length L but whose diameter is
A. d/3
B. 3d
C. d/9
D. 9d

d/3

If parallel: 3d

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Which of the following is a variable renewable source of energy (VRE)?
A. Gas turbine plant
B. Solar plant
C. Coal Plant
D. Diesel Plant

Solar plant

A permeable substance is one
A. which is a good conductor
B. which can behave as a conductor as well as an insulator
C. which is a strong magnet
D. through which the magnetic lines of force can pass very easily

through which the magnetic lines of force can pass very easily

R-rate fuses are designed to interrupt
A. both high overload and fault currents
B. high fault currents only
C. low fault currents only
D. high overload currents only

low fault currents

The unit of magnetic dipole moment is
A. Amp/m^2
B. Amp/m
C. Amp-m^2
D. Amp-m

Amp-m^2

The Pentium is ______ bit microprocessor that was introduced by Intel on March 22, 1993 as the very first CPU in the Pentium brand.
A. 16
B. 32
C. 64
D. 128

What is the device function number is instantaneous overcurrent relay.
A. 50
B. 51
C. 27
D. 21

42. If the fore finger points in the direction of the magnetic field, the thumb points in the direction of motion of the conductor, then the middle finger will point in the direction of induced emf (or current)" . This is known as A. Fleming's Right-Hand Rule B. Lenz Rule C. Fleming's Left-hand Rule D. Faraday's Rule

Fleming's Right-Hand Rule **Keywords:** *Right Hand - Rule = Direction of Motion **(generators)*** *Left Hand - Rule = Direction of Force **(motors)***

47. The Primary of a 3:1 step-up transformer is connected to a source and the secondary is connected to a resistor R. The power dissipated by R in this situation is P. if R is connected directly to the source it will dissipate at a power of: A. P/9 B. P/3 C. P D. 3P

P/9

52. __________ diode exhibits variable capacitance that depends on the reverse voltage. A. Gunn B. Varactor C. Hot Carrier D. IMPATT

Varactor

53. Only one of the two devices on a link can transmit; the other can only receive. A. Half Duplex B. Full Duplex C. Simplex D. Bicomm

Simplex

55. Which of the following is not a consideration in surge arrester? A. arrester class B. current rating C. voltage rating D. insulation coordination

insulation coordination *minsan insulation level, basta **insulation***

56. Silica gel prevents air moisture from entering the outdoor transformer tank. It is placed in the A. conservator B. breather C. core D. windings

breather

68. An initially uncharged capacitor C is connected in series with resistor R. This combination is then connected to a battery of emf V0. Sufficient time elapses so that a steady state is reached. Which one of the following statements is NOT true? A. The time constant is independent of V0 B. The final charge on C is independent of R C. The total thermal energy generated by R is independent of R D. The total thermal energy generated by R is independent of V0

The total thermal energy generated by R is independent of R

69. Which of the following type of fault used only the equivalent positive sequence impedance of the circuit in the short-circuit calculation? A. line to line fault B. three phase fault C. single line to ground fault D. double line to ground fault

three phase fault

70. An unconventional conductors consists of three strands arranged vertically. Find the GMR in terms of radius r of and individual strand. A. 1.5641r B. 1.7643r C. 1.7036r D. 1.8649r

1.7036r

73. The value of inductance in three-phase line is__________ times the loop inductance for single-phase line. A. 2 B. 1/2 C. 1/3 D. 3

1/2

74. The net reactance in a series RLC circuit is A. XL B. XC C. XC + XL D. XL - XC

XL - XC

78. What is the main reason that alternating current replaced direct current for general used? A. AC voltages conveniently transformed B. AC generators do not need slip rings C. AC minimizes magnetic fields D. A given AC current does not heat a power line as much as the same as DC current

AC voltages conveniently transformed

79. A test used to determine the equivalent resistance of an induction motor is A. no load test B. short-circuit C. blocked rotor test D. polarity test

blocked rotor test

80. Diesel power plant is best suited as A. Peak load B. Standby C. Base load D. General purpose

Standby

82. Which power plant requires highest initial cost and minimum cost of fuel transportation? A. Diesel B. Steam C. Nuclear D. Hydro-Electric

Nuclear

83. Basically all electric motors operate on the principle of repulsion or A. Induction B. Magnetism C. Resistance D. Capacitance

Induction

84. What is the unit of relative permeability? A. henry B. henry/meter C. henry/meter^2 D. unitless

unitless

88. By increasing the transmission voltage double of its original value, the same power can be dispatch keeping the line loss A. Equal to its original value B. Half of the original value C. Double of the original value D. One-fourth of the original value

One-fourth of the original value

91. The power generated by some steam power plants drops in the summer because A. A. The lake temp increases B. The water in the lake decreases C. There is no rain D. Many people go swimming in the lake

The lake temp increases

96. Transient current in a circuit results from A. voltage applied to the circuit B. impedance of the circuit C. changes in the stored energy in inductors and capacitors D. resistance of the circuit

changes in the stored energy in inductors and capacitors

97. R.A. ______ is also known as "Anti-Obstruction of Power Lines Act of 2018." A. 11964 B. 11361 C. 12411 D. 1210

11361

98. Which of the following is NOT a source of power? A. thermocouple B. fuel cell C. photovoltaic cell D. solar cell

thermocouple