Free Printable Circuitrix Event-Round 1

1.

Find the value of current i in the circuit when voltage v=5,resistance R1=R2=40 ohms,R3=20 ohms.

a)

0.5A

b)

10A

c)

2A

d)

50A

2.

Find the current in the given circuit.

a)

4mA

b)

0.77mA

c)

5.5mA

d)

10mA

3.

Find the power in the circuit.

a)

0.4 w

b)

0.043 w

c)

0.55 w

d)

0.55 w

4.

The voltage $e_o$ in the given figure is

a)

2V

b)

4/3 V

c)

4V

d)

8V

5.

Which of the following is called as $\pi$ filter?

a)

CLC filter

b)

LC filter

c)

L filter

d)

C filter

6.

Tinting is the process of

a)

manufacturing the PCB board

b)

cleaning the PCB

c)

coating PCB with lead

d)

mounting components on PCB

7.

Identify the symbol

a)

triac thyristor

b)

diac trigger

c)

diode rectifier

d)

none of these

8.

Identify the symbol?

a)

preset resistor

b)

Piezo transducer

c)

thermistor

d)

LDR

9.

What is wrong in the circuit?

a)

VEE

b)

IE

c)

IB

d)

VCC

10.

Find overall resistance in the circuit

a)

60 ohms

b)

22.5 ohms

c)

44.5ohms

d)

30 ohms

11.

What is the color code for a 220 ohm with 5% tolerance resistor?

a)

Red, Red, Brown, Gold

b)

Orange, Orange, Black, Gold

c)

Red, Red, Black, Gold

d)

Red, Red, Brown, Silver

12.

Identify the image

a)

Switch

b)

Potentiometer

c)

Trimmer

d)

Variable Capacitor

13.

Which has greatest power loss?

a)

5Ω

b)

6Ω

c)

7Ω

d)

They have same power loss

14.

Find Req

a)

12Ω

b)

36Ω

c)

24Ω

d)

4Ω

15.

KCL is used when solving circuits with

a)

Closed Loops

b)

Sufficient Nodes / Junctions

c)

Capacitors

d)

None

16.

Find what type of circuit is given

a)

RC phase shift

b)

Low pass filter

c)

High pass filter

d)

None of these

17.

What is the voltage drop across a 100 ohm resistor if a current of 20 milliamps flows through it?

a)

2 volts

b)

20 volts

c)

200 volts

d)

2000 volts

18.

if a capacitor has a capacitance of 10 microfarads and is charged to 50 volts, what is the energy stored in the capacitor

a)

2500 microjoules

b)

12500 microjoules

c)

25000 microjoules

d)

50000 microjoules

19.

What is the magnitude of the voltage across the resistor?

a)

8v

b)

40.2v

c)

200v

d)

0.5v

20.

A hole in a p-type semiconductor is-

a)

an excess electron

b)

A missing electron

c)

A missing atom

d)

A donor level

21.

In common base amplifier, the phase difference between the input and output voltage signal is ?

a)

0

b)

π/2

c)

π/4

d)

π

22.

which of the following is true?

a)

The voltage across the resistor is always greater than the voltage across the capacitor.

b)

The voltage across the capacitor is always greater than the voltage across the resistor.

c)

The voltage across the resistor and capacitor are equal.

d)

None of the above.

23.

An electric circuit operates in ___ type of connectivity configuration?

a)

Long

b)

Short

c)

Disconnected

d)

All the above

24.

A device that does not exhibit negative resistance characteristics is

a)

SCR

b)

tunnel diode

c)

UJT

d)

FET

25.

A circuit using an OP-Amp shown in fig has ?

a)

Voltage series feedback

b)

Voltage shunt feedback

c)

Current shunt feedback

d)

Current series feedback

26.

Transformer coupling can be used in which amplifiers

a)

either voltage or power

b)

only voltage

c)

only power

d)

none of these

27.

Which one of the following statements is most accurate

a)

KVL is concerned with Voltage Drops

b)

KVL is calculated at Super Nodes only

c)

Both (A) and (B)

28.

Which type of component is shown in the following picture?

a)

photo diode

b)

PN junction diode

c)

Pin diode

d)

Tunnel diode

29.

schottky diode is also known as

a)

pin diode

b)

hot carrier diode

c)

step recovery diode

d)

tunnel diode

30.

the circuit shown in the figure is:

a)

Band pass filter with ωo=1/RC

b)

Low pass filter with ωo=1/RC

c)

High pass filter with ωo=1/RC

d)

Band reject filter with ωo=1/RC

31.

how long will it take for the voltage across the capacitor to drop to 1 volt?

a)

1 microsecond

b)

10 microseconds

c)

100 microseconds

d)

1 millisecond

32.

The open loop gain for Op-Amp is 40db, Rf = 40Kꭥ and R1= 4Kꭥ. What will be the gain of the circuit

a)

-7.03

b)

-9.01

c)

-9.45

d)

-8.87

33.

Which of the following laws are used to find the performance of the electric circuit?

a)

Faraday’s law

b)

Newton’s law

c)

Ohm’s law

d)

Plank’s law

34.

What is the purpose of a capacitor C2 in the following diagram ?

a)

To increase the output voltage

b)

To decrease the output voltage

c)

To stabilize the output voltage

d)

To regulate the input voltage

35.

Find the input impedance of the op amp circuit

a)

120k

b)

80k

c)

20k

d)

30k

36.

In mesh analysis, what is the direction of the current in a mesh?

a)

It depends on the resistor values in the mesh

b)

It depends on the voltage source in the mesh

c)

It is assumed arbitrarily

d)

It is always clockwise

37.

Assertion (A): For large signal variations an amplifier circuit has to be analysed graphically

Reason (R): The output characteristics of a transistor is nonlinear.

a)

Both A and R are correct and R is correct explanation for A

b)

Both A and R are correct but R is not correct explanation for A

c)

A is correct R is wrong

d)

A is wrong R is correct

38.

Find the expression of Y in the bellow diagram

a)

(AB+C)B+D

b)

(AB+C)B’+D

c)

ABB’+CB’+D

d)

(AB+C)+D

39.

What is the purpose of voltage divider circuit

a)

regulate the voltage across a load

b)

To amplify the input signal

c)

To generate a reference voltage

d)

To reduce the voltage of a signal

40.

What is the equivalent resistance of

a)

5 ohms

b)

6.67 ohms

c)

30 ohms

d)

40 ohms

41.

In an amplifier with R1=3K ohms R2= 60k ohms.What will be the gain ?

a)

21

b)

20

c)

-21

d)

-20

42.

What is the symbol of n-channel depletion type MOSFET?

a)

b)

c)

d)

43.

The basic storage element in a digital system is

a)

flip flop

b)

counter

c)

multiplexer

d)

encoder

44.

Find the equation of the circuit

a)

X=(A+B)’.(B+C)

b)

X=(A.B)+(B.C)’

c)

X=(A.B)’+(B.C)

d)

X=(A.B)+(B.C)

45.

What is the current in this circuit?

a)

2A

b)

3A

c)

4A

d)

5A

46.

Identify photodiode and schotkky diode.

a)

(iii) & (v)

b)

(ii)& (iii)

c)

(i) & (iv)

d)

(vi) & (iii)

47.

A full adder can be made out of

a)

two half adders

b)

two half adders and a OR gate

c)

two half adders and a NOT gate

d)

three half adders

48.

Miller compensation is better because it helps increase in phase margin with more reduction in unity gain bandwidth.

a)

true

b)

false

49.

X(S) is the Laplace transform of input signal and Y(S) is the Laplace transform of output signal, and T(S) is the transfer function.

X(S)= S2 + 11S + 28 , Y(S)= 2S+10 what are value of zero of the system

a)

2

b)

-10

c)

-4

d)

-5

50.

What is the total resistance?

a)

1.67 ohms

b)

3.3 ohms

c)

5 ohms

d)

15 ohms

Circuitrix Event-Round 1

Total questions: 50

Worksheet time: 48mins

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