Science GK Practice Question and Answer
8 Q: Most commonly used motor in motor generator sets of high capacity?
1707 05ef417197c1ec61320b5a64d
5ef417197c1ec61320b5a64d- 1Cage Model Induction Motorfalse
- 2synchronous motortrue
- 3DC Compounder Motorfalse
- 4None of the abovefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "synchronous motor"
Explanation :
The tendency nowadays is to use synduction or synchronous motors. The synduction motor resembles an induction motor but runs at synchronous speed.
Q: Which of the following hitting methods has the highest power factor?
1707 05ef417b67c1ec61320b5a6c6
5ef417b67c1ec61320b5a6c6- 1heating resistancetrue
- 2induction heatingfalse
- 3Arc heatingfalse
- 4Dielectric heatingfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "heating resistance"
Explanation :
The correct answer is Resistance Heating. Resistance heating is based on the I2R effect and is highly resistive in nature that's why it has the maximum power factor. Electric resistance heating is defined as “the heat produced by passing an electric current through a material that preferably has high resistance”.
Q: A high speed vehicle honks, so its pitch?
1669 05f912fafd6785c0fc0d91299
5f912fafd6785c0fc0d91299- 1is heard as muchfalse
- 2more audibletrue
- 3hearing impairedfalse
- 4First less and then morefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "more audible"
Q: Which one of the following is the softest? 1632 05c2dbfd594bba731de8f0a22
5c2dbfd594bba731de8f0a22- 1sodiumtrue
- 2ironfalse
- 3aluminiumfalse
- 4lithiumfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "sodium"
Q: Air contains maximum amount of 1629 05c2dbeb3f11ee42b64688fc6
5c2dbeb3f11ee42b64688fc6- 1oxygenfalse
- 2nitrogentrue
- 3hydrogenfalse
- 4carbon dioxidefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "nitrogen"
Q: When the Left Ventricle in the human heart contracts, the blood moves to the
1628 05ddfc93e4e9f8676753e7024
5ddfc93e4e9f8676753e7024- 1Brainfalse
- 2Pulmonary Arteryfalse
- 3Aortatrue
- 4Lungsfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "Aorta "
Q: The term PVC used in the plastic industry stands for 1608 05c2dbc589fd00135a4b21163
5c2dbc589fd00135a4b21163- 1polyvinyl choloridetrue
- 2polyvinyl carbotatefalse
- 3phosphor vanadiu chloridefalse
- 4phosphavinyl chloridefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "polyvinyl choloride"
Q: Which of the following is not a fuel gas?
1586 15f910423891d2b03f20ed925
5f910423891d2b03f20ed925- 1Water gasfalse
- 2Producer gasfalse
- 3Laughing gastrue
- 4Marsh gasfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice