Energy Conversion MCQ Questions with answers and solutions Page 57

Q. Long distance electric trains take power on

(A) 25 kV three phase ac
(B) 1500 V dc
(C) 600 V dc
(D) 25 kV single phase ac

💬 Discuss

✅ Correct Answer: (D) 25 kV single phase ac

Published by Mr. Dubey ⭐ 109.99K Points at 14-Jun-2020 11:59 am in Energy Conversion

Q. Which lamp is used for cinerma projectors

(A) Carbon arc lamp
(B) Frosted GLS lamp
(C) Mercury vapour lamp
(D) Sodium vapour lamp

💬 Discuss

✅ Correct Answer: (A) Carbon arc lamp

Published by Mr. Dubey ⭐ 109.99K Points at 14-Jun-2020 11:59 am in Energy Conversion

Q. Heavy water is used in a nuclear power plant as a

(A) Fuel
(B) Reflector
(C) Moderator
(D) Shield

💬 Discuss

✅ Correct Answer: (C) Moderator

Published by Mr. Dubey ⭐ 109.99K Points at 14-Jun-2020 11:59 am in Energy Conversion

Q. The power factor of a three phase induction motor at no load will be

(A) 0.5 to 0.6 leading
(B) 0.2 to 0.3 lagging
(C) Zero
(D) 0.2 to 0.3 leading

💬 Discuss

✅ Correct Answer: (B) 0.2 to 0.3 lagging

Published by Mr. Dubey ⭐ 109.99K Points at 14-Jun-2020 11:59 am in Energy Conversion

Q. The power factor of a load of 100 kW is to be raised from 0.5 lagging to 0.9 lagging. The KVA rating of the capacitor will be

(A) 125
(B) 212.5
(C) 25
(D) 12.5

💬 Discuss

✅ Correct Answer: (A) 125

Published by Mr. Dubey ⭐ 109.99K Points at 14-Jun-2020 11:59 am in Energy Conversion

Q. One kilowatt hour is equal to

(A) 8600,000 calories
(B) 86,000,000 calories
(C) 860,000 calories
(D) 86,000 calories

💬 Discuss

✅ Correct Answer: (C) 860,000 calories

Published by Mr. Dubey ⭐ 109.99K Points at 14-Jun-2020 11:59 am in Energy Conversion

Q. 1 kilowatt hour is the same as

(A) 1 joule
(B) 1000 watt-sec
(C) 1000 joules
(D) 3600,000 watt-sec

💬 Discuss

✅ Correct Answer: (D) 3600,000 watt-sec

Published by Mr. Dubey ⭐ 109.99K Points at 14-Jun-2020 11:59 am in Energy Conversion

Q. Solar cells are made of

(A) Antimony
(B) Phosphorous
(C) Silica
(D) Sulphur

💬 Discuss

✅ Correct Answer: (C) Silica

Published by Mr. Dubey ⭐ 109.99K Points at 14-Jun-2020 11:59 am in Energy Conversion

Q. A tidal power plant is being installed in India near

(A) Bay of Bengal
(B) Vishakhapatnam
(C) Gulf of Cambay
(D) Goa

💬 Discuss

✅ Correct Answer: (C) Gulf of Cambay

Published by Mr. Dubey ⭐ 109.99K Points at 14-Jun-2020 11:59 am in Energy Conversion

Q. Water is fed to the boiler at

(A) Atmospheric pressure
(B) At 100 kg/cm2
(C) Less than atmospheric pressure
(D) At pressure more than the steam pressure

💬 Discuss

✅ Correct Answer: (D) At pressure more than the steam pressure

Published by Mr. Dubey ⭐ 109.99K Points at 14-Jun-2020 11:59 am in Energy Conversion

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