PinoyBIX Engineering Problem Solving and Reference

Below are the answers key for the Multiple Choice Questions in Vacuum Tubes - MCQs Part 2.

51. Pentode

52. strontium or barium oxide

53. Natural sources

54. Oxide coated

55. Transconductance

56. mercury pool devices

57. To protect against filament aging

58. space-charge region is depleted

59. the grid resistance decreases

60. Zener diode

61. more than

62. 180°

63. an amplifier

64. filament temperature

65. ∆E_b/∆I_b

66. about the same as for

67. thermionic electrons

68. Electron-volt

69. 750°

70. Work function

71. 150-1000 mA

72. A tube with a total of five grids

73. Thermionic

74. 1.1 electron-volts

75. zero

76. Tungsten

77. low

78. its lower voltage drop when the plate current is flowing

79. decrease the capacitance between the control grid and the plate

80. a small change in plate current to the corresponding small change in grid current

81. Tungsten

82. Small work function

83. a negative voltage on the plate

84. vacuum tubes

85. A short circuit between the plate and the screen grid

86. same components

87. Impedance matching

88. Less control grid to plate capacitance

89. 3 r_p

90. high µ and R_L

91. One-half

92. radio-frequency

93. diode

94. not

95. less than

96. type and pressure of gas

97. decreases

98. much higher

99. a regulating

100. The electron transit time becomes critical

101. gas current

The Five-Parts Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQs in Electronics Engineering per topic

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Below are the answers key for the Multiple Choice Questions in Vacuum Tubes - MCQs Part 1.

1. Plate and cathode

2. decreases

3. a rectifier

4. Triode valve

5. positive

6. no appreciable change in plate current

7. a rectifier

8. Pentode

9. very high

10. secondary emission

11. Tungsten

12. increases several million times

13. 10000 hours

14. much more than

15. SCR

16. pentode

17. negative voltage applied to plate with respect to cathode

18. E_b/I_b

19. zero with respect to cathode

20. ∆E_b/∆E_c

21. Pentode valve

22. negative

23. loses all control

24. plate

25. 1000 Ω

26. very low frequency

27. unidirectional

28. small

29. no gas in the envelope

30. Class C

31. 30 %

32. 5 times

33. somewhat lower than

34. Transformer coupling

35. space charge

36.  non-linear

37. Siemen

38. Direct coupling

39. Class A

40. less than

41. extinction

42. more current than

43. a controlled switch

44. constant current

45. voltage drop in ac resistance of the tube

46. negative

47. Triode

48. An excessive filament voltage

49. indirectly

50. unidirectional

The Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQs in Electronics Engineering per topic

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Below are the answers key for the Multiple Choice Questions in Computer Fundamentals - MCQs Part 5.

201. Compiler

202. word processing

203. the heart of the computer

204. general register processors

205. ROM

206. RWM

207. assembler

208. SOC

209. bits per second

210. between 2400 and 9600 bps

211. frequency shift keying

212. 300 and 2400 bps

213. flip-flop

214. Low, high

215. Q = 0, Q’ = 1

216. apply a momentary LOW to SET input

217. Q = 1, Q’ = 0

218. synchronous control inputs and clock input

219. edge triggered

220. Set up time

221. Hold time

222. J = 1, K = 0

223. it works independently of the clock input

224. indicates edge-triggered operation

225. D

226. parallel transfer

227. fewer interconnections between registers

228. 10 KHz

229. 8

230. Transducer

231. All of the choices

232. controls a physical variable according to an electrical input signal

233. Full scale error

234. Settling time

235. Because of the response time of the op-amp current-to-voltage converter

236.  Tells control logic when the DAC output exceeds the analog input

237. It is a code placed in the last one or two ROM locations that represents the sum of the expected ROM data from all other locations.

238. Synchronization of digital information transmission between computer and external I/O devices

239. Inversion

240. The address of the data to be operated as the CPU executes the instruction called for by the opcode

241. CPU

242. a short abbreviation for the operation

243. Clock skew

244. Combinational logic circuit

245. DMUX

246. (75.4)₈

247. Track/store amplifier

248. Logic monitor

249. an object program

250. 1.11

The Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQs in Electronics Engineering per topic

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Below are the answers key for the Multiple Choice Questions in Computer Fundamentals - MCQs Part 4.

151. Handshaking

152. Screen image

153. UART

154. Jump

155. LOAD

156. FETCH

157. STORE

158. Underflow

159. Overflow

160. 2’s complement

161. Hypertext mark-up language

162. Benchmark

163. Register

164. Trace

165. Console

166. OR

167. general varieties of electronic circuits used as logic gates, from which, in essence, the building blocks in each series are constructed.

168. propagation delay times for both possible output transitions

169. number of inputs that one output can transmit to

170. the “safety margin” between the output voltage produced by the transmitting block and input voltage required by the receiving block for each of the two logic state.

171. 1 to 100 nanoseconds

172. DIP plastic

173. bus

174. (A + B)’ = A’ · B’

175. both output are the same

176. synchronous

177. BCD counter

178. Shift register

179. Counter

180. 0 and 1

181. 8

182. 1111

183. E

184. 0111111

185. 7400

186.  7486

187. J = 1, K = 1

188. logic pulser

189. R = 0, S = 0

190. connecting the two inputs of the JK flip-flop together

191. Radix

192. Reset

193. Less than 12 gates

194. Between 12 to 99 gates

195. 10,000 or more

196. Assembler

197. Software

198. all of the choices

199. machine language

200. Assembly language

The Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQs in Electronics Engineering per topic

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Below are the answers key for the Multiple Choice Questions in Computer Fundamentals - MCQs Part 3.

101. The number of variables is limited

102. Hang-up state

103. Bubble diagram

104. Truncated counter

105. Monostable circuit

106. Tweaking

107. Astable circuit

108. Debouncing circuit

109. Ratio of the ON time to the total time

110. Reset

111. Set

112. Toggle

113. 5

114. Clock skew

115. race

116. T

117. connecting the J and K inputs together as one input

118. B. D

119. It is equivalent to a one-shot circuit

120. square wave generators

121. Strobe

122. Johnson counter

123. Pseudo-random sequence generator

124. Strobe

125. Blowing

126. LCDs essentially act as a capacitor and consume almost no power

127. PALASM

128. Data bus

129. Simulation table

130. Configurable logic block

131. Address bus

132. Control bus

133. Memory address register

134. Memory data register

135. Prototype

136. Debugging

137. 3

138. Asynchronous SLC

139. memory

140. present state

141. next state

142. NAND

143. B. D

144. n full adders

145. number of comparator bits

146. cascading inputs

147. 4

148. 2 to 4 line decoder with 1 OR gate

149. 6 AND gates and one 4-bit binary adder

150. 3

The Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQs in Electronics Engineering per topic

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Below are the answers key for the Multiple Choice Questions in Computer Fundamentals - MCQs Part 2.

51. Unpredictable, may overheat and be destroyed

52. Poor solder connections

53. Q = 0, Q’ = 1

54. Shorted signal lines

55. ROM

56. SET = CLEAR = 1

57. 7C

58. 5EB

59. ALU

60. 3

61. 2

62. 2

63. Two 4-bit adders and connection logic

64. Accumulator

65. Machine language

66. Encoder

67. PLD

68. PAL

69. Field Programmable Logic Array

70. 2’s complement form

71. Astable multivibrator

72. Backplane

73. BCD counter

74. Ring counter

75. Reset

76. Op code

77. Mnemonic

78. Monotonicity

79. Optical disk memory

80. Wired-AND

81. Strobing

82. Glitch

83. Exclusive OR

84. xy + x’y’

85. writing

86. reading

87. Invalid

88. 16

89. data selector

90. no stable state

91. two stable states

92. one stable state

93. astable

94. Don’t care

95. Combinational logic circuit

96. BCD-to-7-segment driver

97. DC clear

98. Down counter

99. Bubble

100. 2ⁿ x 1

The Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQs in Electronics Engineering per topic

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Below are the answers key for the Multiple Choice Questions in Computer Fundamentals - MCQs Part 1.

1. Ten position switch

2. Is considered discrete

3. 10

4. toggle

5. 107

6. 11000

7. 4095

8. 11111111

9. logic

10. Complementary Metal-Oxide Semiconductor

11. Microcomputer

12. 10110010, 101111000

13. Binary-coded decimal

14. 396

15. 4

16. 5457

17. 897

18. Logical subtraction

19. 32

20. Gray code

21. ASCII

22. 48 45 4C 50

23. Straight binary code

24. 2^N

25. OR

26. AND

27. All inputs should be high

28. Output level is the same as the input level

29. 1

30. 1

31. 0

32. A + B + C + D + E + F

33. AND

34. AB’

35. Three

36.  0

37. G

38. 1

39. CLC

40. A’B’C’D + A’B’CD’ + A’BC’D’

41. Karnaugh map

42. 1

43. ULSI

44. DIP

45. 0 to 0.8 V

46. 2 to 5 V

47. 0 to 1.5 V

48. 3.5 to 5 V

49. It acts like logic 1

50. floating

The Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQs in Electronics Engineering per topic

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Below are the answers key for the Multiple Choice Questions in Industrial Electronics: Principles and Applications - MCQS Part 2.

51. Damping ratio

52. Transfer function

53. breakover voltage

54. LASCR

55. a triac without a gate terminal

56. Negative resistance

57. Biomedical electronics

58. UJT

59. Negative resistance

60. of its high temperature and power capabilities

61. Photovoltaic transduction

62. SCR

63. less than

64. Diac

65. starts conducting

66. y(t) = A₀ + A₁e^s1t

67. Servomechanism

68. Forward breakover voltage

69. Root locus

70. Open-loop control system

71. Holding current

72. Reverse breakdown voltage

73. 20 mA

74. Flywheel governor

75. Seismic mass

76. All of the above

77. Thy

78. 1 μs

79. Gas-filled triode

80. positive

81. positive

82. Hygrometer

83. Bourdon tube

84. Changing gate voltage

85. Thyristor

86. Three

87. Differential

88. gate

89. 1 V

90. 5 to 40 μs

91. Silicon

92. electroencephalography

93. accelerometers

94. unidirectional

95. decreases

96. small leakage current

97. positive or negative half-cycle

98. Gyro

99. Bellow

100. 1 V

The Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQs in Electronics Engineering per topic

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Below are the answers key for the Multiple Choice Questions in Industrial Electronics: Principles and Applications - MCQS Part 1.

1. Radiation sensing

2. EEG

3. 100 to 10000 KeV

4. SCS

5. Diac

6. Between 4 to 10 KΩ

7. Programmable Unijunction Transistor

8. Diac

9. SCR

10. Seebeck effect

11. Both A and B above

12. SCR

13. Increases

14. two main terminals and a gate terminal

15. in inverse-parallel

16. 10 to 100 KeV

17. 0.1 to 0.0001 nm

18. cathode, anode, gate

19. 55 pF

20. Four

21. bidirectional

22. By appropriate gate current

23. both positive and negative

24. Two

25. a rectifier and transistor

26. Gate

27. Four

28. Three

29. heavily

30. two pn junctions

31. double-based

32. an AC

33. has low leakage current

34. Gate

35. Rate effect

36.  Sawtooth generator

37. Diac

38. current

39. decreases

40. one pn junction

41. a sawtooth generator

42. By breakover voltage

43. 60 Hz frequency

44. high

45. two SCRs in parallel opposition

46. R_B1 / (R_B1 + R_B2)

47. Reduce anode voltage to zero

48. Regulator

49. more than

50. essentially constant

The Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQs in Electronics Engineering per topic

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Below are the answers key for the Multiple Choice Questions in Microelectronics - MCQS Part 2.

51. 80 nA

52. Open-loop

53. Single-stone

54. RC synthesis

55. Less than 1 W

56. 555 timer

57. A square wave clock

58. The inverting input is connected to +5V

59. The ratio of Rf/R must equal to the reciprocal of the number of inputs

60. Unity gain and zero phase shift around the feedback loop

61. Ground

62. 2

63. A capacitor

64. 0.5 to 15 GHz

65. Monolithic

66. Both a and b

67. For commercial

68. Czochralsky pulling technique

69. W.S Boyle and G.E Smith

70. Trip point

71. Virtual ground

72. 1 million

73. Average of the two base currents

74. Both a and b

75. 1.5 mils x 3 mils

76. Slew rate

77. Stray wiring capacitance

78. 4 mils x 6.5 mils

79. 3 mils x 4.5 mils

80. Astable multivibrator

81. All of the above

82. Duodecimal number system

83. Planar technology

84. Roll-off

85. 20 dB per decade (-20db/decade)

86. Compensating capacitor

87. Integrated circuit

88. Slew rate

89. 500 mW

90. ± 30 V

91. 70 dB

92. National semiconductor corporation

93. µA

94. -30 to 200ºC

95. Letter suffix

96. J

97. Negative

98. Both b and c

99. Input offset current

100. Forms of discrete circuits

The Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQs in Electronics Engineering per topic

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Below are the answers key for the Multiple Choice Questions in Microelectronics - MCQS Part 1.

1. Jack Kilby

2. Inductor

3. To produce change in output when an input voltage equals a reference voltage

4. No feedback

5. Integrated circuit (IC)

6. Planar diffusion

7. Very large-scale integration (VLSI)

8. Low power

9. Capacitor

10. Large-scale integration (LSI)

11. The difference in V_BE values

12. Equals the AC collector resistance divided by two times the AC resistance of the emitter diode

13. Medium-scale integration (MSI)

14. Small-scale integration (SSI)

15. Exhibits a frequency that can be varied with a dc control voltage

16. They are simply circuits that happen to be constructed integrally and like all circuits are either switching type or amplifying type

17. The output of a differentiator is proportional to the rate of change of the input

18. All of the above

19. All of the above

20. 2 MΩ

21. Military and industrial

22. Capacitor current is constant

23. The charging and discharging of capacitor

24. -55 ºC to +125 ºC

25. 0ºC to +70 ºC

26. BIFET

27. Heat sink

28. Digital IC

29. Linear IC

30. Common mode signal

31. Prototype

32. Operational amplifier

33. 741 op amp

34. Flat from dc to the critical frequency

35. Has an inherent current limiting

36.  555 timer

37. 50 mW

38. Manufacturer

39. Voltage follower

40. Negative feedback

41. A

42. D

43. 25 mA

44. Discrete circuit

45. All of the choices

46. Power bandwidth

47. A terminal of the op-amp where the input resistors are commonly connected

48. A single RC circuit

49. 0.5 V/µs

50. Slew rate

The Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQs in Electronics Engineering per topic

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Below are the answers key for the Multiple Choice Questions in Tests and Measurements - MCQs Part 2.

51. rms

52. both dc and ac work

53. Permanent-magnet

54. sensitivity

55. Stroboscope

56. Check the output frequency of a transmitter

57. Oscilloscope

58. An electrostatic force

59. nine times

60. 50 mA

61. Ammeter

62. DMM

63. 50 mV

64. One cycle of the waveform

65. Cathode

66. Squared

67. Lissajous pattern

68. 10.01 A

69. Changing number of turns of operating coil

70. Sawtooth generator

71. Vertical

72. Thermocouple

73. Electrostatic

74. employ a sensing element that converts the RF power to a measurable dc or low-frequency signal

75. CRT

76. voltmeters

77. 0.1 µW to 100 mW

78. high temperatures

79. Permanent-magnet moving coil

80. Induction watt-hour meter

81. An integrating

82. 20%

83. At half of full

84. at far right

85. the generation and manipulation of electronic waveshapes

86. Cathode ray oscilloscope (CRO)

87. period

88. Cathode ray tube (CRT)

89. Phosphor

90. Thermistor sensor

91. 4.76%

92. sinusoidal

93. Wheatstone

94. Hay bridge

95. capacitance

96. Maxwell bridge

97. Wien bridge

98. Ω/ V

99. Resolution

100. Megger

The Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQs in Electronics Engineering per topic

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Below are the answers key for the Multiple Choice Questions in Tests and Measurements - MCQS Part 1.

1. An indicating

2. Increases

3. D’ Arsonval

4. Wattmeter

5. Rest

6. Increases with temperature

7. Analog instrument

8. Damping and controlling torques

9. By moving either the magnet or the coil

10. Never

11. Aluminum

12. Pulse width

13. the ratio of resistors on one side of the bridge equals the ratio of resistors on the other side

14. Damping torque

15. Deflecting force

16. Controlling force

17. Electrostatic

18. Conductor and non-magnetic material

19. Pulse delay

20. peak to peak

21. Fuse

22. Diode sensor

23. squared

24. horizontal

25. Kelvin electrostatic voltmeter

26. Low resistance resistor

27. dc work only

28. Control grid

29. Orthogonal nulling

30. vertical center

31. Because it is spring controlled

32. Thermal converters

33. Grid-dip meter

34. Manganin

35. 1 µA

36.  wattmeter

37. Dynamometer

38. Moving-iron instruments

39. There is no current that flows through the load

40. negligible

41.zero adjust

42. intensity control

43. Damping force

44. 0.02004 Ω

45. Temperature variation

46. 0.1 nW to 10 mW

47. Milliammeter

48. Wheatstone bridge

49. Potentiometer bridge

50. Magnetic field

The Series

Following is the list of multiple choice questions in this brand new series:

Complete List of MCQs in Electronics Engineering per topic

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