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Worksheets

ECE QUIZ

Total questions: 50

Worksheet time: 10mins

Name
Class
Date
1.

What is the unit of Frequency?

a)

Hertz

b)

Farad

c)

Siemens

d)

Henry

2.

He developed the Direct Current

a)

Michael Faraday

b)

Nikola Tesla

c)

Thomas Edison

d)

Alessandro Volta

3.

He developed the alternating current.

a)

Michael Faraday

b)

Nikola Tesla

c)

Carl Friedrich Gauss

d)

Alessandro Volta

4.

It limits the flow of current.

a)

Ampere

b)

Admittance

c)

Resistance

d)

Conductance

5.

In a capacitive load, what is the value of reactance if the capacitance is 0?

a)

0

b)

Approaching infinity

c)

Approaching Cubao station

d)

Unity

6.

The resistors that are in series will both share the same

a)

Voltage

b)

Current

c)

Blood

d)

Heart

7.

At resonance condition, power factor is

a)

0

b)

1

c)

2

d)

Infinity

8.

If the frequency of a voltage wave form is 60 hz then, the frequency of its respective power waveform will be

a)

30hz

b)

20hz

c)

180hz

d)

120hz

9.

A coil is consists of

a)

A conductor and a resistor

b)

A conductah and a resistah

c)

An inductor and a resistor

d)

An inductah and a resistah

10.

When current and voltage waveforms increase/decrease at the same instant, they are

a)

In phase

b)

Out of phase

c)

Telophase

d)

Prophase

11.

Germanium diode has a barrier potential of

a)

0.3 V

b)

0.5 V

c)

0.7 V

d)

0.9 V

12.

Decibel is used to provide convenience in calculating

a)

Signal level

b)

Attenuation

c)

Connection

d)

Fidelity

13.

It is used for impedance matching

a)

Common emmiter

b)

Common collector

c)

Common base

d)

Common source

14.

For High fidelity, device must pass all the frequency band needed for the target signal, drawback is

a)

Resistivity

b)

Conductivity

c)

Selectivity

d)

Inconsistency

15.

The roll-off rate when signal level loss twice the original value is

a)

6dB/octave

b)

12dB/octave

c)

20dB/octave

d)

20dB/decade

16.

-20dB/decade means decrease of gain by -20dB per ______ difference between frequency

a)

1/2th

b)

1/4th

c)

1/8th

d)

1/10th

17.

The capacitor connected at the emitter is considered as

a)

Bypass capacitor

b)

Coupling capacitor

c)

Wiring capacitor

d)

Junction capacitor

18.

Class A, B, and AB amplifiers are considered as

a)

Linear amplifier

b)

Quadratic Amplifier

c)

Cubic Amplifier

d)

Mini amplifier

19.

Op-amp is short for

a)

Operational amplifier

b)

Oppressive amplifier

c)

Operational amputa

d)

Operational amplitude

20.

The VT for an E-Mosfet is commonly denoted as

a)

Transitional voltage

b)

Threshold voltage

c)

Voltage transit

d)

Vico Toto

21.

Quinary is

a)

Base 3

b)

Base 5

c)

Base 7

d)

Base 9

22.

A+AB=A is what law of Boolean Algebra

a)

Law of idempotency

b)

Law of absorption

c)

Law of elimination

d)

Law of involution

23.

For nand to nand design, get the simplified

a)

SOP

b)

POS

c)

PRODUCT TERM

d)

SUM TERM

24.

He/She is the world's first programmer

a)

Herman Hollenith

b)

Ada Lovelace

c)

Howard Aiken

d)

Jack Kilby

25.

Karnaugh mapping aims to group adjacent 0 and 1 in the highest order of

a)

1

b)

2

c)

3

d)

4

26.

Force between charged particles is inversely proportional to

a)

Magnitude

b)

Distance between them

c)

Permittivity

d)

Charge

27.

It is the charge of very small particles distributed in space

a)

Line charge

b)

Sheet charge

c)

Volume charge

d)

Space charge

28.

The unit of electric flux

a)

Coulombs

b)

Volts

c)

Volts/meter

d)

Joules

29.

The divergence of the vector flux density is the outflow of flux from a dmall closed surface per unit volume as the volume approaches

a)

Infinity

b)

0

c)

1

30.

Measurement with respect to 0 Volts reference

a)

Electromotive

b)

Absolute potential

c)

Potential difference

d)

Electrophorus

31.

A negative potential difference implies that there is a

a)

Voltage drop

b)

Voltage rise

32.

Dipole moment is a

a)

Scalar quantity

b)

Vector quantity

33.

The following are units of stress except

a)

N/m

b)

N/m^2

c)

Pascal

d)

psi

34.

It is the contact pressure between two bodies

a)

Normal stress

b)

Shearing stress

c)

Bearing stress

35.

It tends to shorten the material

a)

Compressive stress

b)

Tensile stress

c)

Shear stress

d)

Bearing stress

36.

The tangential stress is also known as

a)

Circumferential stress

b)

Tensile stress

c)

Axis stress

d)

Compressive stress

37.

Tangential stress is _____ of Longitudinal stress

a)

Twice

b)

Thrice

c)

Half

d)

The same

38.

It measures the deformation of a body.

a)

Stress

b)

Strain

c)

Toughness

d)

Elasticity

39.

Materials that can withstand an applied stress

a)

Strong materials

b)

Hard materials

c)

Resilient materials

d)

Elastic materials

40.

It is the ratio of the steady force acting on an elastic body resulting displacement with a unit of N/mm

a)

Stiffness

b)

Strength

c)

Plasticity

d)

Elasticity

41.

Among the following choices, it has the highest level of resistance against strain

a)

Concrete

b)

Cast iron

c)

Aluminum

d)

High carbon steel

42.

A unit step signal has a value of 1 when t is at

a)

0

b)

0 to positive infinity

c)

0 to negative infinity

d)

None

43.

j^2 is equal to

a)

-j

b)

-1

c)

1

d)

j

44.

cos(-β) is equal to

a)

cos(β)

b)

-cos(β)

c)

cos(-β)

d)

-cos(-β)

45.

Is 0.121212 a rational number?

a)

Yes

b)

No

c)

Maybe

d)

Radical

46.

Which statement is wrong

a)

All periodic signals are composed of rational numbers

b)

All periodic signals are analyzed by Fouries series

c)

Periodic signals can be subjected to Parseval's relation assuming it satisfies the given condition.

d)

Fourier transform is used for not periodic signals where it can be considered periodic with a short period.

47.

The angular value of a periodic function with a period of 2pi is

a)

1

b)

2

c)

pi

d)

1/2

48.

syslin means

a)

System of linear equations

b)

System of lines

c)

Syslin sisig pritos ring

d)

Syslinear equations

49.

A function with 5 roots has a degree of

a)

2

b)

3

c)

4

d)

5

50.

pfss means

a)

Partial factor decomposition

b)

Partial fraction decomposition

c)

Partial frontrow decomposition