Govt Exams Mock Test FREE | Online Quiz Competition

Q1. Which of the following logic family is fastest of all

TTL

RTL

DCTL

ECL

Q2. 3 - phase voltage source inverter is operated in 180° conduction mode. Which one of the following statements is true?

Both pole-voltage and line-voltage will have 3rd harmonic components

Pole-voltage will have 3rd harmonic component but line-voltage will be free from 3rd harmonic

Line-voltage will have 3rd harmonic component but pole-voltage will be free from 3rd harmonic

Both pole-voltage and line-voltage will be free from 3rd harmonic components

Q3. A single phase full wave AC voltage controller has a resistive load of 10 Ω and the input voltage is 230 V, 50 Hz. The delay angle of both the thyristors are \(45^\circ\). The input power factor is

0.853

0.953

0.707

0.505

Q4. A boost converter operating at duty cycle of 0.5 with input voltage of 100 V dc suppling a resistive load of 100 \(\Omega\). The input current of the buck converter will be,

4A

8A

2A

1A

Q5. A 220 V DC supply is connected to a DC chopper which is operating on TRC control mode at a frequecy of 5 kHz. When the output is 110 V, the ON and OFF period of each cycle are respectively

150 \(\mu s\),50 \(\mu s\)

50 \(\mu s\),50 \(\mu s\)

50 \(\mu s\),150 \(\mu s\)

100 \(\mu s\),100 \(\mu s\)

Q6. The 440V is applied to 3 phase AC to DC diode rectifier with resistive load circuit. The average dc voltage across the load will be ______V

594

954

495

945

Q7. A buck converter has input voltage of V, output voltage of \(V_O'\) inductance of L and it operates at frequency f, then the amplitude of ripple current is equal to

\(\Delta I\) =\(\frac{V_O(V-V_O)}{VfL}\).

\(\Delta I\) =\(\frac{V_O(V+V_O)}{VfL}\).

\(\Delta I\) =\(\frac{V_O(V-V_O)}{fL}\).

\(\Delta I\) =\(\frac{V_O(V-V_O)}{VL}\)

Q8. Circuit breaker used for over current protection of thyristor operates when the fault current is

of long period

of short duration

Both (A) and (B)

Neither (A) and (B)

Q9. Which is four terminals device?

FET

SCR

IGBT

MOSFET

Q10. A single phase semiconverter is feeding a highly inductive load and has freewheeling diode across the load. The waveshapes of output voltage and output current

are similar

may be similar or dissimilar

are not similar

are similar only if firing angle is zero

Quiz

Year 2024

November
Week # 4 Quiz 1

Q1. Which of the following logic family is fastest of all

Q2. 3 - phase voltage source inverter is operated in 180° conduction mode. Which one of the following statements is true?

Q3. A single phase full wave AC voltage controller has a resistive load of 10 Ω and the input voltage is 230 V, 50 Hz. The delay angle of both the thyristors are \(45^\circ\). The input power factor is

Q4. A boost converter operating at duty cycle of 0.5 with input voltage of 100 V dc suppling a resistive load of 100 \(\Omega\). The input current of the buck converter will be,

Q5. A 220 V DC supply is connected to a DC chopper which is operating on TRC control mode at a frequecy of 5 kHz. When the output is 110 V, the ON and OFF period of each cycle are respectively

Q6. The 440V is applied to 3 phase AC to DC diode rectifier with resistive load circuit. The average dc voltage across the load will be ______V

Q7. A buck converter has input voltage of V, output voltage of \(V_O'\) inductance of L and it operates at frequency f, then the amplitude of ripple current is equal to

Q8. Circuit breaker used for over current protection of thyristor operates when the fault current is

Q9. Which is four terminals device?

Q10. A single phase semiconverter is feeding a highly inductive load and has freewheeling diode across the load. The waveshapes of output voltage and output current

Quiz

Year 2024

November Week # 4 Expire on 21 Dec 2024

December Week # 1 Expire on 31 Dec 2024

December Week # 2 Expire on 07 Jan 2025

December Week # 3 Expire on 14 Jan 2025

November Week # 4 Quiz 1

Q1. Which of the following logic family is fastest of all

Q2. 3 - phase voltage source inverter is operated in 180° conduction mode. Which one of the following statements is true?

Q3. A single phase full wave AC voltage controller has a resistive load of 10 Ω and the input voltage is 230 V, 50 Hz. The delay angle of both the thyristors are \(45^\circ\). The input power factor is

Q4. A boost converter operating at duty cycle of 0.5 with input voltage of 100 V dc suppling a resistive load of 100 \(\Omega\). The input current of the buck converter will be,

Q5. A 220 V DC supply is connected to a DC chopper which is operating on TRC control mode at a frequecy of 5 kHz. When the output is 110 V, the ON and OFF period of each cycle are respectively

Q6. The 440V is applied to 3 phase AC to DC diode rectifier with resistive load circuit. The average dc voltage across the load will be ______V

Q7. A buck converter has input voltage of V, output voltage of \(V_O'\) inductance of L and it operates at frequency f, then the amplitude of ripple current is equal to

Q8. Circuit breaker used for over current protection of thyristor operates when the fault current is

Q9. Which is four terminals device?

Q10. A single phase semiconverter is feeding a highly inductive load and has freewheeling diode across the load. The waveshapes of output voltage and output current

Record & Track Your Performance

November
Week # 4 Quiz 1