YT YouTube2Text

YouTube2Text → Transcripts → 50 Items MCQ | Electronics Reviewer | ECE and ECT Licensure Exam

50 Items MCQ | Electronics Reviewer | ECE and ECT Licensure Exam — Transcript

by CRT Engr. Josh TV · 2,002 words · 450 segments · language en · Watch on YouTube

Open in transcriber Summarize with AI Download SRT/VTT

Full transcript

0:01Good dayga CRT. Welcome again to our
0:03channel.
0:05In this video, I'm going to present 50
0:09items ECE and ECT MCQ reviewer focusing
0:15on electricity,
0:17DC,
0:19AC,
0:21semiconductor,
0:23diode,
0:25BJT,
0:26FET,
0:28amplifier,
0:30oscillator,
0:32filters,
0:33logic, circuits, industrial electronics,
0:38motors and generators.
0:41I'm going to divide
0:43this video lecture in two parts. The
0:46first part is for questions only and
0:50after that the second part will reveal
0:54the answers for each questions.
0:58So let's begin.
1:00Question number one. The si unit of
1:02electric charge is volt,
1:06cou,
1:08ampere
1:09or far?
1:17Question number two. A charge of 24
1:21coulum passes through a conductor in 6
1:24seconds.
1:25What is the current?
1:282 amp, 4 a, 6 a or 12 amp.
1:41Number 3. If a 12 volt source delivers 3
1:45amp to a load, what is the load
1:48resistance?
1:502 ohms,
1:523 ohms,
1:544 ohms, or 36 ohms?
1:58So if problem solving yung question,
2:01pwede niyo munang i-post yung video and
2:04then solve then write your answer kung
2:07saan man, kung sa scratch niyo, sa
2:09notebook niyo or kung saang papel ninyo.
2:13Okay? Then later che-checkan niyo yan
2:15gamit iyung part two ng video na to.
2:22Question number four. The power consumed
2:25by a 20 ohm resistor
2:28carrying 2 amp is
2:32is this 20 wat 40 wat 80 wat or 160 wat?
2:38Again posty muna video then solve.
2:46Question number 5. Two resistors 6 ohms
2:50and 12 ohms are connected in parallel.
2:54The equivalent resistance is
2:572 ohms, 4 ohms, 8 ohms or 18 ohms.
3:05Question number 6.
3:07In a series circuit, which quantity is
3:10the same through all components?
3:13Voltage, current,
3:16power or resistance.
3:24Question number 7.
3:28voltage law states that the algebra exam
3:31of voltages
3:33around the close loop is
3:36equal to the source current equal to 0
3:40always positive or equal to total
3:43resistance
3:52question number 8 a 10 ohm resistor and
3:5520 ohm resistor are connected in series
3:59across 90 volts the current is so this
4:03pertains to the current of the total
4:05circuit is this 1 amp 2 amp
4:103 amp or 9
4:19question number 9 a capacitor stores
4:22energy mainly in
4:26magnetic field, electric field, chemical
4:30field or thermal field.
4:38Question number 10. The energy stored in
4:41inductor is given by which formula?
4:451/2 CB s
4:481/2 LI S
4:51vi
4:53or I s R.
5:01Question number 11.
5:04For a sinusoidal voltage, the RMS value
5:07is equal to707
5:12times the pick value,
5:141.414
5:16times the pick value
5:182 times the pick value or the pick to
5:22pick value
5:29question number 12. The capacitive
5:32reactance of a capacitor decreases when
5:37frequency decreases,
5:39frequency increases,
5:42capacitance decreases or voltage
5:46decreases.
5:55Question number 13. The inductive
5:57reactance of a coil is XL = 1 / 2π FL,
6:05XL = 2πfl,
6:09XL = R / F, or XL = B / I S.
6:23Question number 14.
6:25In a purely inductive AC circuit,
6:28current
6:30leads voltage by 90°,
6:34lags voltage by 90°
6:39is in face with a voltage or
6:44zero.
6:52Question number 15. In a purely
6:55capacitive AC circuit, current
6:59lags voltage by 90°,
7:02leads voltage by 90°
7:05is in face with the voltage
7:08or independent of frequency.
7:14Question number 16
7:16power factor is the cosine of the angle
7:20between resistance and reactance.
7:24voltage and current
7:26power and energy
7:29frequency and period
7:38question number 17
7:41at resonance in a series RLC circuit the
7:44net reactance is maximum
7:49zero
7:51capacitive or Ito yung XC only
7:56inductive or ito iyung XL only.
8:08Question number 18.
8:10A transformer works based on
8:13electrostatic induction,
8:16mutual induction,
8:19photoelectric effect
8:21or termion emission.
8:31Question number 19. A pure semiconductor
8:35without added impurity is called
8:38extriconductor,
8:41intrinsic semiconductor,
8:45pype semiconductor
8:47or N type semiconductor.
8:54Question number 20.
8:57The most commonly used semiconductor
8:59material is
9:01copper,
9:03aluminum,
9:05mica
9:07or silicon.
9:12Question number 21.
9:15Adding impurity atoms to a pure
9:18semiconductor is called doping
9:22rectification
9:25filtering
9:27or oscillation.
9:35Question number 22.
9:38Pentavalent impurity atoms are also
9:41called
9:43acceptor atoms,
9:45insulator atoms,
9:48neutral atoms
9:50or donor atoms.
9:59Question number 23.
10:02The majority carriers in an N type
10:05semiconductor are
10:08electrons,
10:10holes,
10:12protons,
10:13or ions.
10:23Question number 24.
10:26The barrier potential of a silicone
10:29diode at room temperature is
10:32approximately
10:341 volt,3
10:36volt,7
10:39volt
10:40or 1.5 volt.
10:50Question number 25.
10:53A diode allows current to flow easily
10:56when it is open circuited,
11:01short to ground,
11:03reverse biased
11:05or forward biased.
11:09So we are already halfway sa target
11:12nating 50 items.
11:15Pwede niyo munang i-check yung mga sagot
11:17niyo. Double check niyo yung answers
11:19niyo from 1 to 25.
11:22Then proceed sa question number 26.
11:29Question number 26. A zener diode is
11:32commonly used for voltage regulator,
11:37current transformer,
11:39logic inverter
11:42or photovoltaic cell.
11:52Question number 27.
11:55A rectifier circuit converts DC to AC,
12:00AC to DC,
12:02AC to RF
12:04or light to sound.
12:15Question number 28.
12:18The stage after the rectifier in a basic
12:21DC power supply
12:24is usually
12:26the oscillator,
12:28antenna,
12:31mixer,
12:33or filter.
12:41Question number 29.
12:44A bipolar junction transistor is
12:47primarily
12:48a voltage control device,
12:51current control device,
12:54light control device or frequency
12:58control device.
13:08Question number 30. The three terminals
13:12of BJT are emeter base collector,
13:17gate drain source,
13:20anode catode gate or input output
13:24common.
13:33Question number 31. For a silicone BJT
13:37in normal conduction, VBE is
13:41approximately
13:431 volt3
13:46volt7
13:49volt
13:50or 2.0 volt.
13:59Question number 32. The common emiter
14:03current gain of transistor is
14:06represented by
14:08alpha,
14:10beta,
14:12gamma,
14:14or lambda.
14:22Question number 33.
14:25If I or collector current equ 10 mamp
14:30and I or base current is 100 microamp,
14:35the value of beta is 10
14:3950
14:41100
14:43or 1000.
14:55Question number 34.
14:57A field effect transistor is primarily
15:02a current controlled device, voltage
15:06contr device,
15:08heat control device or optical device.
15:21Question number 35.
15:24The three basic terminals of Fetr
15:27emiter base collector,
15:30gate source drain,
15:33anode catode grid or input output
15:37ground.
15:42Question number 36.
15:44A major advantage of a field effect
15:47transistor
15:49compared with a bipolar junction
15:51transistor is its very low input
15:55impedance
15:56low voltage rating only need for high
16:00gate current
16:02or very high input impedance
16:11question number 37
16:14in an channel JPET the gate to source
16:17junction is normally forward biased
16:22reverse biased
16:24short circuited
16:26or open only
16:34question number 38 the gate of a mospet
16:38is insulated from the channel by copper
16:41oxide
16:43Germanium layer,
16:46silicon dioxide
16:48or carbon film.
16:57Question number 39. An amplifier is a
17:00circuit used to increase
17:03signal amplitude, wirelength frequency
17:08only resistance only.
17:18Question number 40. The voltage gain of
17:21an amplifier is generally defined as B
17:25in over B out, P out over B in,
17:30I out over B out, or B out over V in.
17:44Question number 41. A class A amplifier
17:49conducts 4 90° of the input cycle, 180°
17:54of the input cycle 270
17:58of the input cycle 360
18:02of the input cycle.
18:05Question number 42. An oscillator
18:08converts DC power into a steady DC
18:13output, an AC wave form,
18:17mechanical torque only or heat only.
18:28Question number 43. The barcosent
18:31criterion requires loop gain magnitude
18:34equ to 0.5
18:391 or 10.
18:48Question number 44. A low pass filter
18:51allows
18:53low frequency to pass and attenuates
18:56high frequency.
18:58High frequencies to pass and attenuates
19:00low frequencies.
19:03Only DC to be black or only noise to be
19:07amplified.
19:16Question number 45.
19:19The cut of frequency of a simple RC low
19:23filter is FC = 2πrc
19:28FC = 1 / 2πrc
19:32FC = R / C or FC = C / R.
19:40Question number 46.
19:43The output of an angate is high only
19:46when all inputs are high. Any input is
19:50high, all inputs are low. Inputs are
19:55different.
20:01Question number 47.
20:04An inverter performs which logic gate
20:06operation
20:09and or not or nest
20:19number 48. An SCR is a semiconductor
20:23device commonly used for power control,
20:27light sensing only, voltage measurement
20:31only or audio storage.
20:42Question number 49. A PLC is mainly used
20:46in industry
20:48for automatic control and sequencing,
20:52radio transmission,
20:55pure analog amplification
20:57or battery charging only.
21:07And for question number 50, our last
21:11question,
21:12an electric motor converts electrical
21:15energy into chemical energy, mechanical
21:20energy, light energy only or stored
21:24charge only.
21:29Let us now move to part two. The answers
21:35for question number one. The answer is
21:37letter B cou.
21:43For question number two, the answer is
21:47letter B 4
21:52so this is just 24/
21:566
21:59question number 3 the answer is 4 ohms
22:04so by ohms law this is just 12 volts div
22:073
22:13question number 4 the answer is 80 watt
22:19so for the power formula you can use i s
22:24r so 2 s 20
22:31question number 5 the answer is 4 ohms
22:37So this is just parallel. You can try
22:40product over sum. So 6 * 12 / by 18.
22:51Question number 6 the answer is B.
22:54Current.
22:58Question number 7 the answer is
23:02B equ0.
23:09Question number 8. The answer is
23:14C 3
23:18so you just need to add 10 and 20. So
23:21you have 30 ohms.
23:24And voltage over the resistance 90 / 30
23:28ohms is 3 amp.
23:33Question number 9. The answer is B.
23:38Electric field.
23:42Question number 10. The answer is
23:47B. 1 / 2 L S.
23:52So itong 1 / 2 multiplier yan.
23:57Kunin niyo muna yung 1 / 2 or5 then
23:59multiply niyo sa L I S.
24:04Question number 11. The answer is letter
24:07A. 0.707
24:09times the peak value.
24:13Question number 12. Answer is B.
24:16Frequency increases.
24:21Question number 13. The answer is letter
24:25B. XL = 2π FN.
24:32Question number 14. Answer is letter B.
24:37Lags voltage by 90°.
24:43Question number 15 is B. Leads voltage
24:48by 90°.
24:53Question number 16 is B. voltage and
24:58current
25:03question 17 the answer is B0
25:12question 18 the answer is B mutual
25:17induction
25:22question number 19 the answer is
25:25B intrinsic semiconductor.
25:33Question number 20 the answer is D.
25:38Silicon
25:44question number 21 the answer is a
25:49doping.
25:54Question number 22. The answer is
25:58D. Don atoms.
26:03Question number 23. The answer is
26:07A. Electrons.
26:12Question number 24. The answer is
26:17letter C 0.7 volt.
26:23Question number 25. The answer is D.
26:27Forward biased.
26:31So up to this point, pwede niyo munang
26:33i-check yung correct answers niyo.
26:35Nakailang score ba kayo up to 25?
26:39Naka line of two ba kayo?
26:43Line of one or single digit
26:46up to this point? Okay? So check niyo
26:49muna.
26:51Let's continue question number 26. The
26:54answer is letter A, voltage regulator.
27:00Question number 27. Answer is B. AC to
27:04DC.
27:08Question 28. The answer is D. Filter.
27:16Question 29. The answer is B. current
27:20control device.
27:25Question 30
27:28a emiter base and collector.
27:32Question number 31 the answer is letter
27:36C7
27:38volt.
27:40Question number 32. The answer is letter
27:44B beta.
27:49Question number 33. The answer is C 100.
27:55Just divide IC by IB to get the beta.
28:04Question number 34. The answer is letter
28:06B. voltage control device.
28:14Question number 35
28:16letter B gate source drain.
28:23Question number 36. The answer is letter
28:26D. Very high input impedance.
28:32Question 37. The answer is B. Reverse
28:36biased.
28:39Question number 38. The answer is C.
28:43Silicon dioxide.
28:48Question number 39. The answer is letter
28:51A. signal amplitude
28:57question number 40 the answer is letter
29:01D B out over B in
29:08question 41 the answer is letter D 360°
29:13of the input cycle
29:17question 42 the answer is letter B an AC
29:21wave form
29:25question 43
29:27is letter C 1
29:33question 44 the answer is letter A low
29:38frequencies to
29:40attenuates high frequencies
29:44question 45 the answer is letter B FC 1
29:502πrc C
29:54question 46 the answer is letter A all
29:59inputs are high
30:03question 47 the answer is letter C not
30:07operation
30:12question 48 the answer is letter A power
30:16control
30:20question 49. The answer is letter A
30:23automatic control and sequencing.
30:29And last item question number 50 the
30:32answer is B mechanical energy.
30:39And that's all for now. See you in our
30:41next video tutoral.
30:44P

About this transcript

This page contains the full transcript of 50 Items MCQ | Electronics Reviewer | ECE and ECT Licensure Exam by CRT Engr. Josh TV, generated from the public captions YouTube serves with the video. The transcript has 2,002 words across 450 segments, with the original timestamps preserved so you can click any line to jump to that moment in the embedded player.

What you can do with it

Use the transcript to take notes, quote the speaker, build a study guide, generate a summary with ChatGPT or Claude via the YouTube Summary tool, or export it as a timed subtitle file with YouTube to SRT. You can also re-open it in the transcriber to translate the transcript into 100+ languages.

Free YouTube transcript tool

YouTube2Text is a free YouTube transcript generator — no signup, no daily limit. Paste any YouTube link and get the full transcript instantly, with timestamps, click-to-jump, translation to 100+ languages, AI prompts for ChatGPT, Claude, and Gemini, and exports to TXT, SRT, VTT, or Markdown.