Options:
- A. very low damping
- B. very high damping
- C. no damping at all
- D. radial field disintegration
View Answer
A. very low damping
Physics
An alternating current is represented by the equation I = I?sin?t which of the following equation represents an alternating current of frequency and amplitude twice that of the above current ?
Options:
- A. I = 2I?Sin(?t/2)
- B. I = 2I?Sin(2?t)
- C. I = 2ISin?t
- D. I = I?sin(2?t)
View Answer
B. I = 2I?Sin(2?t)
Choose the correct statement. In the case of AC circuit ohms law holds for_______________?
Options:
- A. Peak values of voltage and current
- B. Effective values of voltage and current
- C. Instantaneous values of voltage and current
- D. All of the above
View Answer
D. All of the above
Three coplanar forces acting on a body keep it in equilibrium. They should therefore be_______________?
Options:
- A. Concurrent
- B. Non-concurrent
- C. Parallel
- D. Non-parallel
View Answer
A. Concurrent
The direction of the vector product is given by______________?
Options:
- A. Head to tail rule
- B. Right-hand rule
- C. Left-hand rule
- D. Triangular rule
View Answer
B. Right-hand rule
One AMU is equal to__________________?
Options:
- A. 1.66 x 10-27kg
- B. 166 x 10-15ng
- C. 166 x 10-20g
- D. All of above
View Answer
D. All of above
Which one of the following radiations possesses maximum velocity ?
Options:
- A. ?-rays
- B. ?-rays
- C. ?-rays
- D. All of above have the same speed
View Answer
C. ?-rays
On a clear day at noon the solar energy reaching the earth is ____________________?
Options:
- A. 1.44kw/m2
- B. 1.4kw/m2
- C. 1 kw/m2
- D. none
View Answer
C. 1 kw/m2
A man lifts vertically a weight of 40kg through 1m in 10s; while a chile lifts vertically a weight of 10kg through a distance of 1m in 1s. What will be correct inference ?
Options:
- A. man does more work than child
- B. child does more work than man
- C. both do the same amount of work
- D. it is a foolish question
View Answer
B. child does more work than man
The energy band occupied by the valence electrons is called___________________?
Options:
- A. Energy state
- B. Valence band
- C. ve energy state
- D. conduction band
View Answer
B. Valence band