MCQ
The device is based on the principle of mutual induction is:
- Aac generator
- Bgalvanometer
- Cvoltmeter
- ✓transformer
✓
Answer
Correct option: D.
transformer
(d)transformer
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
An electric lamp is marked 60 W, 230 V. The cost of 1 kilowatt hour of power is Rs. 1.25. The cost of using this lamp for 8 hours is
|
(a) Rs. 1.20 |
(b) Rs. 4.00
|
(c) Rs. 0.25 |
(d) Rs. 0.60 |
In a circuit 5 percent of total current passes through a galvanometer. If resistance of the galvanometer is G then value of the shunt is
|
(a) 19 G |
(b) 20 G |
(c) |
(d) |
A current of 1 mA is flowing through a copper wire. How many electrons will pass a given point in one second [e = 1.6 × 10–19 Coulomb]
|
(a) 6.25 × |
(b) 6.25 × |
(c) 6.25 × |
(d) 6.25 × |
The rubber used in the wheels of aero-plane is _________?
The k line of singly ionised calcium has a wavelength of 393.3 nm as measured on earth. In the spectrum of one of the observed galaxies, this spectral line is located at 401.8 nm. The speed with which the galaxy is moving away from us, will be
|
(a) 6480 km/s |
(b) 3240 km/s |
(c) 4240 km/sec |
(d) None of these |
Soap bubble appears coloured due to the phenomenon of
|
(a) Interference |
(b) Diffraction |
(c) Dispersion |
(d) Reflection |
A prism having an apex angle 4o and refraction index 1.5 is located in front of a vertical plane mirror as shown in figure. Through what total angle is the ray deviated after reflection from the mirror
|
(a) 176o |
(b) 4o |
(c) 178o |
(d) 2o |
The electron emitted in beta radiation originates from:
The concept of solid angle is a natural extension of a angle to dimensions.
Identify the dimensional formula of electric current.