Page 369 - GMAT 2017b_Neatb

Electronics Information Test 2

83. Which of the following has the longest wavelength? 90. Low potential, for electricians, most closely means
(A) ultraviolet waves (A) 600 watts or lower.
(B) radio waves (B) circuits that have low chance of overload.
(C) X-rays (C) a low risk of fire.
(D) microwaves (D) a low cost of wiring.

84. What is needed to convert 120 volts to 12 volts? 91. The frequency of a signal is inversely proportional to
(A) a step-down transformer which of the following?
(B) a step-up transformer (A) power
(C) a rectifier (B) phase
(D) a diode reduction device (C) amplitude
(D) period
85. What does the following schematic symbol represent?
92. What would the expected power level be at the input to
the receiver?
-10 dBm
(A) a battery
OUTPUT
(B) a circuit breaker 30 dB 20 dB
Source Load
(C) a fuse LOSS LOSS
(D) a headphone
86. One coulomb per second is equal to one 2 dB 3 dB 5 dB
(A) ampere. LOSS LOSS LOSS
(B) volt.
(C) watt. (A) 20 dBm
(D) decibel. (B) 30 dBm
(C) 40 dBm
(D) 50 dBm
87. Which of the following functions would be performed
by a diode?
(A) amplifier 93. A capacitor’s storage potential, or capacitance, is
(B) capacitor measured in
(A) coulombs
(C) filter
(B) decibels
(D) rectifier
(C) Fahrenheit
(D) farads
88. A photovoltaic cell produces
(A) direct current.
(B) alternating current. 94. What is true of a random access memory (RAM)
(C) square wave current. electronic chip?
(D) all the above. (A) Its contents are erased when power is turned off.
(B) Its contents are saved when power is turned off.
(C) It is no different from a read-only-memory
89. Which symbol represents a wattmeter?
(ROM) chip.
(D) all the above
(A)
95. Electrons have a ______ charge while protons have a
_______ charge.
(B)
(A) neutral, positive
(B) negative, neutral
(C) positive, negative
(D) negative, positive
(C)
96. If you have a 10-ohm resistor and a 55-ohm resistor in
(D) W series, what is the total resistance?
(A) 15 ohms
(B) 35 ohms
(C) 65 ohms
(D) 110 ohms

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