Free Printable ECT

1.

What is the best conductor of electricity?

a)

Gold

b)

Copper

c)

Aluminum

d)

Silver

2.

Find the thermal coefficient of a material if it has a resistance of 10Ω at 0°C and increases to 11Ω at 160°C.

a)

0.0625/°C

b)

0.00625/°C

c)

0.000625/°C

d)

0.0000625/°C

3.

Which of the following is a volatile type of memory?

a)

RAM

b)

ROM

c)

WORM

d)

WARM

4.

ECT-PBE: It is used to convert electrical signal to pneumatic energy.

a)

Pneumatic cylinder

b)

Electromagnetic cylinder

c)

Solenoid valve

d)

Control valve

5.

ECT-PBE: Four identical resistors are first connected in parallel, then connected in series. The resultant resistance of the first to second connection is:

a)

4 times

b)

16 times

c)

1/4 times

d)

1/16 times

6.

An electrical insulator can be made a conductor:

a)

By heating

b)

By cooling

c)

By ionizing

d)

By oxidizing

7.

What stage is in-between of AC source and filter in AC-DC power supply?

a)

Filter

b)

Rectifier

c)

Regulator

d)

Load

8.

Calculate the power delivered to an 8Ω load if the current flowing to the load is 2A.

a)

16 watts

b)

4 watts

c)

32 watts

d)

128 watts

9.

It is used to display the frequency domain of the signal

a)

Oscilloscope

b)

Function generator

c)

Spectrum analyzer

d)

Oscillator

10.

It is used to measure an insulation resistance.

a)

Insulation meter

b)

Megger

c)

VOM

d)

Pyrometer

11.

What is the power factor of a purely capacitive circuit?

a)

0

b)

1

c)

10

d)

1000

12.

Suppose two coils, having inductances of 20uH and 35uH, are connected in series that their fields reinforce. The coefficient of coupling is 0.55. Calculate the total inductance of the combination?

a)

81 uH

b)

82 uH

c)

83 uH

d)

84 uH

13.

A carbon resistor is colored-coded with brown, green, red and gold stripes from left to right. Its value is

a)

1500 Ω ±5 percent

b)

6800 Ω ±5 percent

c)

10,000 Ω ±10 percent

d)

500,000 Ω ±5 percent

14.

The merging of a free electron and a hole is called

a)

Covalent bonding

b)

Lifetime

c)

Recombination

d)

Thermal energy

15.

A certain circuit has two 10-ohm resistors connected in parallel. If 10V supply applied to the circuit, what is the circuit current?

a)

1A

b)

2A

c)

0.5A

d)

4A

16.

What is the peak voltage of a diode made from gallium arsenide?

a)

0.30V

b)

0.67V

c)

0.70V

d)

1.20V

17.

In soldering electronics circuit, what is the best alloy to use?

a)

20% tin, 80% lead

b)

40% tin, 60% lead

c)

60% tin, 40% lead

d)

80% tin, 20% lead

18.

Which of the following semiconductor material pertains to a doped semiconductor material?

a)

Intrinsic

b)

Extrinsic

c)

Crystal

d)

Alloy

19.

Which of the following actuator has the greatest force capability?

a)

Electric

b)

Electronic

c)

Pneumatic

d)

Hydraulic

20.

What is the current amplification of common emitter amplifier?

a)

Alpha

b)

Omega

c)

Beta

d)

Gamma

21.

This law defines the direction of polarity of the induced voltage in a current carrying conductor.

a)

Ohm's law

b)

Lenz' law

c)

Faraday's law

d)

Inductance law

22.

In an intrinsic semiconductor,

a)

there are no free electrons

b)

the free electrons are thermally produced

c)

there are only holes

d)

electrons are greater than the number of holes

23.

A copper-wire conductor with 0.3 inches in diameter has an area of

a)

900 cmil

b)

9,000 cmil

c)

90,000 cmil

d)

900,000 cmil

24.

Which of the following resistors 5th band color corresponds to a type of resistor with the least chance of failure (or highly reliable)?

a)

Brown

b)

Red

c)

Orange

d)

Yellow

25.

Three resistors: 2Ω, 3Ω, and 4Ω are connected in delta. What are the resistance in its wye equivalent connection in ohms?

a)

2/3, 4/3, 8/9

b)

13, 8.67, 6.5

c)

10, 4.55, 7.2

d)

1/3, 4/5, 7/6

26.

A sinewave signal has a peak voltage of 10V. What is the instantaneous voltage at 50°?

a)

7.66V

b)

10.83V

c)

5.42V

d)

3.83V

27.

It is the measure of a capacitor's ability to store charge.

a)

Capacitance

b)

Power

c)

Energy

d)

Work

28.

What is the connection of 2uF, 3uF, and 4uF to produce 9uF total capacitance?

a)

Connect in series

b)

Connect in parallel

c)

Connect the 2uf in series with the parallel connection of the remaining

d)

Connect the 2uf in parallel with the series connection of the remaining

29.

What is the time it takes to fully charge the capacitor?

a)

Two time constant

b)

Three time constant

c)

Four time constant

d)

Five time constant

30.

What is the resonant frequency of an LC tank circuit if L=10mH and C=100pF?

a)

159.15 Hz

b)

159.15 kHz

c)

159.15 MHz

d)

159.15 GHz

31.

Its output impedance is approximately 30kΩ to 50kΩ.

a)

Common base

b)

Common emitter

c)

Common collector

d)

All from the list

32.

Also called emitter follower:

a)

Common base

b)

Common collector

c)

Common emitter

d)

Common transistor

33.

Find the value of emitter-to-base current ratio if emitter-to-collector current ratio is 0.99.

a)

100

b)

1

c)

99

d)

0

34.

What is the cgs unit of magnetic flux?

a)

Maxwell

b)

Weber

c)

Oersted

d)

Tesla

35.

Why should you wear a safety belt if you are working on an antenna tower?

a)

To safely bring any tools you might use up and down the tower

b)

To keep the tower from becoming unbalanced while you are working

c)

To prevent you from accidentally falling

d)

To safely hold your tools so they don't fall and injure someone on the ground

36.

In a frequency modulation transmitter, the _____ is in-between the speech amplifier and the oscillator.

a)

modulator

b)

power amplifier

c)

microphone

d)

frequency multiplier

37.

Which list of emission types is in order from the narrowest bandwidth to the widest bandwidth?

a)

CW, SSB voice, RTTY, FM voice

b)

CW, FM voice, RTTY, SSB voice

c)

CW, RTTY, SSB voice, FM voice

d)

RTTY, CW, SSB voice, FM voice

38.

What is the name for the distance a radio wave travels during one complete cycle?

a)

Wave speed

b)

Waveform

c)

Wavelength

d)

Wave spread

39.

Simplify $\frac{x^4-15x^2+10x+24}{x^2-2x-3}$

a)

$x^2+2x-8$

b)

$x^2-2x+8$

c)

$x^2+4x-6$

d)

$x^2-4x+6$

40.

The point (-3, -6) lies in ___ quadrant.

a)

1st

b)

2nd

c)

3rd

d)

4th

41.

Determine the LCM of 9, 24, and 30.

a)

120

b)

240

c)

360

d)

600

42.

Given: $\log\left(x^2+3x\right)+\log5x=1+\log2x.$ Find x.

a)

0

b)

1

c)

2

d)

3

43.

What is the 5th term when you expand $\left(x+y\right)^{10}?$

a)

$252x^6y^4$

b)

$210x^6y^4$

c)

$252x^4y^6$

d)

$210x^4y^6$

44.

What is the title of RA9292?

a)

Electronics Engineering Law of 2004

b)

Electronics Engineering Act of 2004

c)

ECE Law of the Phil. of 2004

d)

ECE Act of the Phil of 2004

45.

Approval Date of RA9292

a)

April 17, 2004

b)

April 27, 2004

c)

May 17, 2004

d)

May 27, 2004

46.

Effectivity date of RA9292

a)

April 17, 2004

b)

April 27, 2004

c)

May 17, 2004

d)

May 27, 2004

47.

RA9292 contains ____ articles

a)

5

b)

6

c)

7

d)

8

48.

RA9292 contains ____ sections

a)

40

b)

41

c)

42

d)

43

49.

An Act declaring Board and Bar as Civil Service Examination.

a)

RA 1080

b)

RA 1081

c)

RA 7925

d)

RA 300

50.

The keystone of professional conduct is:

a)

Honesty

b)

Justice

c)

Courtesy

d)

Integrity

ECT - PE1

Total questions: 50

Worksheet time: 25mins

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