If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
An a.c. the generator can be converted to a d.c. generator by replacing the
commutator with an armature
armature with a commutator
commutator with slip rings
slip rings with a commutator
Correct answer is D
No explanation has been provided for this answer.
The maximum and minimum thermometer reads the
the maximum temperature during the day and the minimum temperature at night at all times.
the maximum temperature at night and minimum temperature during the day from the last reset
the maximum temperature at night and minimum temperature during the day at all times
the maximum temperature during the day and minimum temperature at night from the last reset
Correct answer is D
No explanation has been provided for this answer.
quadrupled
quartered
halved
doubled
Correct answer is A
No explanation has been provided for this answer.
60 km hr\(^{-1}\)
8 km hr\(^{-1}\)
40 km hr\(^{-1}\)
56 km hr\(^{-1}\)
Correct answer is B
From momentum conservation
(800 x 80) - (1200 x 40)
= (800 + 1200) V
= 64000 - 48000 = 2000V
16000 = 2000V
V = \(\frac{16000}{2000}\)
= 8kmh\(^-1\)
The common velocity = 8kmhr\(^{-1}\)
A
B
C
D
Correct answer is B
No explanation has been provided for this answer.