Options:
- A. Lags behind voltage by ?/2
- B. Is in phase with voltage
- C. Opposite in phase of voltage by ?
- D. Leads forward the voltage by ?/2
View Answer
D. Leads forward the voltage by ?/2
Physics
A voltage V = V0 cos ?t is applied across a resistor of resistance R the average power dissipated per cycle in the resistor is given by___________?
Options:
- A. V?/?2R
- B. V/?2?R
- C. V02/?2R
- D. 2/?2?R
View Answer
C. V02/?2R
The cross product i^ x j^ is equal to_______________?
Options:
- A. Zero
- B. One
- C. i^
- D. k^
View Answer
D. k^
Which one is a unit vector ?
Options:
- A. ??3 i^ + ??3 j^ + ??3 k^
- B. 1/??3 i^ + 1/??3 j^ +1/ ??3 k^
- C. ??3 / 3 i^ + ??3 / 3 j^ + ??3 / 3 k^
- D. Both B and C are correct
View Answer
D. Both B and C are correct
Neutron and proton are commonly known as______________?
Options:
- A. Nucleon
- B. Meson
- C. Boson
- D. Quartz
View Answer
A. Nucleon
A particle having the mass of an electron and the charge of a proton is called a______________?
Options:
- A. Antiproton
- B. Positron
- C. Gamma rays
- D. Photon
View Answer
B. Positron
Which of the following types of force can do no work on the particle on which it acts ?
Options:
- A. frictional force
- B. gravitational force
- C. elastic force
- D. centripetal force
View Answer
D. centripetal force
Geothermal energy is a _______________________ source of energy?
Options:
- A. non-renewable
- B. stable
- C. renewable
- D. none of the above
View Answer
C. renewable
The angular position of cells remains the same for a sample of a crystal. This property is called___________________?
Options:
- A. Isotropy
- B. Cleavage
- C. Homogeneity
- D. The external symmetry of form
View Answer
D. The external symmetry of form
Coercive force is the force which opposes ____________________?
Options:
- A. Demagnetization
- B. Breakage
- C. Extension
- D. Surface cracking
View Answer
A. Demagnetization