Govt Exams Mock Test FREE | Online Quiz Competition

Q1. Which of the following statements is FALSE about LED lamps?

An LED is doped with silicon and germanium like all semiconductor devices.

An LED works in forward biased condition only.

An LED is a semiconductor device.

The cathode region of an LED would have a slight bent in the structure in comparison with the anode portion.

Q2. 7805 IC is a

CMOS X-OR IC

3 - Terminal Voltage Regulator

TTL NOR Gate IC

TTL NAND Gate IC

Q3. Photolithography involves

Making photographic mask and
photoetching

Only photoetching

Only masking

None of these

Q4. In hartley oscillator, tank circuit consists of

2 capacitor with one inductor

3 inductors

3 capacitors

2 inductor with one capacitor

Q5. Which type of mode is used as amplifier?

Cut off

Reverse Active

Active

Saturation

Q6. Consider a four bit D to A converter. The analog value corresponding to digital signals of values 0000 and 0001 are 0 V and 0.0625 V respectively. The analog value (in Volts ) corresponding to the digital signal 1111 is ______________.

15 V

0.74 V

0.93 V

6.25 V

Q7. Minimize the given boolean expression:
\(A + B [AC + (B + \bar C) D]\)

ABC

A+BD

D+AB

B+CD

Q8. The simplification of the Boolean expression given below can be given as :
(A'+B+C').(A'+B+C).(C +D).(C+D+E)

(A'+B).(C+D)

(A'+B').(C+D')

(A+B').(C+D)

(A'+B).(C'+D)

Q9. The hexadecimal number B6C7 is equivalent to decimal number

49761

47691

46791

49761

Q10. What is the maximum decimal value that can be represented using 10 bits in two's complement notation?

255

511

1023

2047

Quiz

Year 2025

January
Week # 3 Quiz 4

Q1. Which of the following statements is FALSE about LED lamps?

Q2. 7805 IC is a

Q3. Photolithography involves

Q4. In hartley oscillator, tank circuit consists of

Q5. Which type of mode is used as amplifier?

Q6. Consider a four bit D to A converter. The analog value corresponding to digital signals of values 0000 and 0001 are 0 V and 0.0625 V respectively. The analog value (in Volts ) corresponding to the digital signal 1111 is ______________.

Q7. Minimize the given boolean expression:
\(A + B [AC + (B + \bar C) D]\)

Q8. The simplification of the Boolean expression given below can be given as :
(A'+B+C').(A'+B+C).(C +D).(C+D+E)

Q9. The hexadecimal number B6C7 is equivalent to decimal number

Q10. What is the maximum decimal value that can be represented using 10 bits in two's complement notation?

Quiz

Year 2025

January Week # 3 Expire on 14 Feb 2025

January Week # 4 Expire on 21 Feb 2025

February Week # 1 Expire on 28 Feb 2025

February Week # 2 Expire on 07 Mar 2025

January Week # 3 Quiz 4

Q1. Which of the following statements is FALSE about LED lamps?

Q2. 7805 IC is a

Q3. Photolithography involves

Q4. In hartley oscillator, tank circuit consists of

Q5. Which type of mode is used as amplifier?

Q6. Consider a four bit D to A converter. The analog value corresponding to digital signals of values 0000 and 0001 are 0 V and 0.0625 V respectively. The analog value (in Volts ) corresponding to the digital signal 1111 is ______________.

Q7. Minimize the given boolean expression: \(A + B [AC + (B + \bar C) D]\)

Q8. The simplification of the Boolean expression given below can be given as : (A'+B+C').(A'+B+C).(C +D).(C+D+E)

Q9. The hexadecimal number B6C7 is equivalent to decimal number

Q10. What is the maximum decimal value that can be represented using 10 bits in two's complement notation?

Record & Track Your Performance

January
Week # 3 Quiz 4

Q7. Minimize the given boolean expression:
\(A + B [AC + (B + \bar C) D]\)

Q8. The simplification of the Boolean expression given below can be given as :
(A'+B+C').(A'+B+C).(C +D).(C+D+E)