Quiz Questions

Question 1 1 Marks

What is the package type for BF 245B?

A

TO-72

B

TO-92

C

TO-82

D

TO-102

Question 2 1 Marks

What is the term stands for TRIAC?

A

Triode Alternate control

B

Triode DC semiconductor

C

Triode AC semiconductor

D

Triode Access console

Question 3 1 Marks

Which characteristics exhibits the current conduction increases while the voltage across the devices decreases in a DIAC?

A

Linearity characteristics

B

Negative resistance characteristics

C

Positive resistance characteristics

D

Nonlinearity characteristics

Question 4 1 Marks

How the lamp failures caused by the high inrush currents in lamp dimmer circuits using TRIAC is eliminated?

A

By the fuse

B

Using MCB

C

Using Safety resistor

D

By soft start circuit

Question 5 1 Marks

Which type of defects are occurring in solid
state relays?

A

More sparking

B

Intermittent working

C

Tendency to fail open

D

Tendency to fail shorted

Question 6 1 Marks

Which device is a unipolar transistor?

A

UJT

B

FET

C

BJT

D

IGBT

Question 7 1 Marks

Which is the N - channel FET?

A

AC supply connected to drain termin

B

Main current flows through N-doped material

C

Main current flows through P-doped material

D

S-terminal connected to positive

Question 8 1 Marks

What is the load current handled by the solid state relay that must be mounted to some heatsink to protect the device?

A

Greater than 4 Amp

B

3 Amp

C

2 Amp

D

1 Amp

Question 9 1 Marks

What is the maximum drain- source voltage, VDS for the JFET BF 245B?

A

10 V

B

20 V

C

30 V

D

40 V

Question 10 1 Marks

Which current flows in TRIAC between MT1 and MT2?

A

Conventional current

B

Principal current

C

Reverse current

D

Leakage current

Question 11 1 Marks

Which is the package type for the JFET BFW10?

A

TO-62

B

TO-72

C

TO-82

D

TO-92

Question 12 1 Marks

What is the maximum current ratings of solid state relays available in high power packages?

A

1 Amp

B

10 Amp

C

40 Amp

D

100 Amp

Question 13 1 Marks

Which device generates high frequency radio frequency indeferences by the extremely rapid turn-ON time?

A

UJT

B

TRIAC

C

Op-Amp

D

Transistor

Question 14 1 Marks

What is the maximum drain current, ID for BF 245B?

A

15mA

B

25mA

C

35mA

D

45mA

Question 15 1 Marks

What is the maximum power dissipation Pmax for BF 245B?

A

100 mw

B

200 mw

C

300 mw

D

400 mw

Question 16 1 Marks

What type of control is used for FET?

A

Resistance controlled device

B

Voltage controlled device

C

Current controlled device

D

Frequency controlled device

Question 17 1 Marks

What will happen in SCR with forward biased condition and gate current is applied?

A

Reverse current conduction commences

B

Forward current conduction stops

C

Reverse current turned off

D

Forward current conduction commences

Question 18 1 Marks

What is the maximum specified voltage for the TRIAC TIC 201D?

A

1.5 V

B

1.7 V

C

2.1 V

D

2.5 V

Question 19 1 Marks

Which is the device made and interconnected by two transistors?

A

UJT

B

SCR

C

FET

D

LED

Question 20 1 Marks

What is the maximum drain current ID for BFW10?

A

5 mA

B

10 mA

C

20 mA

D

30 mA

Question 21 1 Marks

What is the code number of TRIAC?

A

2N2646

B

BFW10

C

BT136

D

2N1597

Question 22 1 Marks

What is the function of solid state relay(SSR)?

A

Low pass filter

B

High frequency oscillator

C

High gain amlifier

D

High speed switching

Question 23 1 Marks

Which semiconductor devices are composed inside the solid state relays?

A

Diodes and transistors

B

Thyristor and transistors

C

MOSFETs and IGBTs

D

UJYs and FETs

Question 24 1 Marks

How the solid state relays are working for increased lifetime?

A

Bulky profile

B

Slower in operations

C

Spark generated during switching

D

No moving parts to wear and tear

Question 25 1 Marks

What is the maximum forward gate current (Ig) for BFW10 JFET?

A