MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How can we change the speed of a DC motor using PWM? |
| A. | By changing amplitude of PWM |
| B. | By keeping fixed duty cycle |
| C. | By changing duty cycle of PWM |
| D. | By increasing power of PWM |
| Answer» D. By increasing power of PWM | |
| 2. |
Why are solid-state relays advantageous over electromechanical relays? |
| A. | they need zero voltage circuit |
| B. | they need less current to be energised |
| C. | they need less voltage to be energised |
| D. | none of the mentioned |
| Answer» C. they need less voltage to be energised | |