Hotel Management Class Test 17

Different type of Stater Class Test

Welcome to your Different type of Stater Class Test Hope you understand the class & now it's time to examine yourself through test. Remember you have only 10 minutes to complete the class test after 10 minutes Class test will be automatically submit.आपका स्वागत है आपके अलग-अलग प्रकार के स्टेटर क्लास टेस्ट में। आशा है कि आपको क्लास समझ में आ गई होगी और अब टेस्ट के माध्यम से खुद को परखने का समय आ गया है। याद रखें कि आपके पास क्लास टेस्ट पूरा करने के लिए केवल 10 मिनट हैं। 10 मिनट के बाद क्लास टेस्ट अपने आप सबमिट हो जाएगा।

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1. Which type of motor starter is the simplest and cheapest?

Star-Delta Starter

DOL Starter

Auto Transformer Starter

Soft Starter

2 / 30

2. The main purpose of a starter in an electric motor is to:

Stop the motor

Increase the speed

Limit the starting current

Increase the torque

3 / 30

3. In a DOL starter, what component provides overload protection?

Contactor

Circuit Breaker

Thermal Overload Relay

Transformer

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4. Which starter initially connects a three-phase motor in a star configuration and later changes to delta?

DOL Starter

Soft Starter

Star-Delta Starter

Rotor Resistance Starter

5 / 30

5. Which starter is best for motors with a high starting torque requirement?

Star-Delta Starter

DOL Starter

Auto Transformer Starter

None of the above

6 / 30

**6. Which of these is not a component of a DOL starter?**

Contactor

Star-Delta Timer

Overload Relay

Push Button

7 / 30

7. Star-Delta starters are only suitable for:

Single-phase motors

Small motors

Three-phase squirrel cage motors

Series motors

8 / 30

8. Which starter uses a variable voltage to gradually increase the speed of the motor?

Soft Starter

Star-Delta Starter

DOL Starter

Rotor Resistance Starter

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9. Rotor resistance starter is used with:

Synchronous motors

Single-phase motors

Slip ring induction motors

Squirrel cage motors

10 / 30

10. What is the full form of DOL in DOL starter?

Double Operating Line

Direct On Line

Direct Operating Load

Dual Output Line

11 / 30

11. What happens to starting current when using a Star-Delta Starter?

It increases

It stays the same

It decreases

No effect

12 / 30

12. Soft starters are based on:

Contactors

Relays

Power Electronics

Resistors

13 / 30

13. The Star-Delta Starter reduces starting voltage by a factor of:

1/2

1/3

1/√3

√3

14 / 30

14. Which starter uses an auto-transformer to reduce voltage?

Star-Delta Starter

Rotor Resistance Starter

Auto Transformer Starter

DOL Starter

15 / 30

15. Which of the following starters is not suitable for frequent starting?

Soft Starter

DOL Starter

Star-Delta Starter

Auto Transformer Starter

16 / 30

16. What type of starter provides smooth acceleration?

DOL Starter

Soft Starter

Auto Transformer Starter

Manual Starter

17 / 30

17. Which of these is a disadvantage of a DOL starter?

It is expensive

It gives high starting current

It requires a star-delta timer

It cannot be used for any motor

18 / 30

18. Which starter offers the best energy efficiency during start-up?

DOL

Star-Delta

Soft Starter

Rotor Resistance Starter

19 / 30

19. In star-delta starting, the motor starts with:

Delta connection

Star connection

Open circuit

Short circuit

20 / 30

20. A soft starter typically controls motor voltage using:

Resistors

Relays

SCRs or Triacs

Transformers

21 / 30

21. The contactor in a DOL starter is used for:

Speed control

Voltage reduction

Remote ON/OFF operation

Torque boosting

22 / 30

22. Which type of starter is best for applications with belt conveyors and pumps?

Star-Delta

DOL

Soft Starter

Rotor Resistance Starter

23 / 30

23. Which type of starter requires the motor terminals to be brought out separately?

DOL Starter

Star-Delta Starter

Auto Transformer Starter

Rotor Resistance Starter

24 / 30

24. In a DOL starter, the motor is connected directly to the:

Earth

Supply

Transformer

Battery

25 / 30

25. In Auto Transformer Starter, starting voltage can be adjusted to:

25%, 50%, 75%

10%, 20%, 30%

80%, 90%, 100%

0%, 50%, 100%

26 / 30

26. What is a common application for rotor resistance starters?

Fans

Pumps

Hoists and Cranes

HVAC Systems

27 / 30

27. What happens when you use a soft starter for a motor?

Sudden torque is produced

The motor starts at full voltage

Motor starts gradually

Motor doesn't start

28 / 30

28. Which of these starters uses time delay relays?

DOL

. Star-Delta

Rotor Resistance

Soft Starter

29 / 30

29. Star-Delta starter is used for motors having power ratings of:

< 5 HP

5-15 HP

> 10 HP

> 100 HP

30 / 30

30. What is the drawback of using rotor resistance starter?

High cost

Low efficiency due to heat loss

Complex construction

All of the above

Your score is

1. Which type of motor starter is the simplest and cheapest?

2. The main purpose of a starter in an electric motor is to:

3. In a DOL starter, what component provides overload protection?

4. Which starter initially connects a three-phase motor in a star configuration and later changes to delta?

5. Which starter is best for motors with a high starting torque requirement?

6. Which of these is not a component of a DOL starter?

7. Star-Delta starters are only suitable for:

8. Which starter uses a variable voltage to gradually increase the speed of the motor?

9. Rotor resistance starter is used with:

10. What is the full form of DOL in DOL starter?

11. What happens to starting current when using a Star-Delta Starter?

12. Soft starters are based on:

13. The Star-Delta Starter reduces starting voltage by a factor of:

14. Which starter uses an auto-transformer to reduce voltage?

15. Which of the following starters is not suitable for frequent starting?

16. What type of starter provides smooth acceleration?

17. Which of these is a disadvantage of a DOL starter?

18. Which starter offers the best energy efficiency during start-up?

19. In star-delta starting, the motor starts with:

20. A soft starter typically controls motor voltage using:

21. The contactor in a DOL starter is used for:

22. Which type of starter is best for applications with belt conveyors and pumps?

23. Which type of starter requires the motor terminals to be brought out separately?

24. In a DOL starter, the motor is connected directly to the:

25. In Auto Transformer Starter, starting voltage can be adjusted to:

26. What is a common application for rotor resistance starters?

27. What happens when you use a soft starter for a motor?

28. Which of these starters uses time delay relays?

29. Star-Delta starter is used for motors having power ratings of:

30. What is the drawback of using rotor resistance starter?

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**6. Which of these is not a component of a DOL starter?**