1
###
The reading of the ammeter for a silicon diode in the given circuit

**The reading of the ammeter for a silicon diode in the given circuit is:**

- 15 mA
- 11.5 mA
- 13.5 mA
- 0

2
###
In a common emitter amplifier circuit using an n-p-n transistor

In a common emitter amplifier circuit using an n-p-n transistor, the phase difference between the input and the output voltages will be:

- 180°
- 45°
- 90°
- 135°

3
###
The combination of gates shown below yields

The combination of gates shown below yields

- NAND gate
- NOT gate
- XOR gate
- OR gate

4
###
A strip of copper and another germanium are cooled

A strip of copper and another germanium are cooled from room temperature to 80 K. The resistance of

- each of these decreases
- each of these increases
- copper strip increases and that of germanium decreases
- copper strip decreases and that of germanium increases

5
###
In a transformer, number of turns in the primary coil are 140 and that in the secondary coil are 280

In a transformer, number of turns in the primary coil are 140 and that in the secondary coil are 280. If current in primary coil is 4 A, then that in the secondary coil is

- 10 A
- 6 A
- 4 A
- 2 A

6
###
A diode detector is used to detect an amplitude modulated wave of 60% modulation

A diode detector is used to detect an amplitude modulated wave of 60% modulation by using a condenser of capacity 250 pico farad in parallel with a load resistance 100 kilo ohm. Find the maximum modulated frequency which could be detected by it.

- 10.62 KHz
- 5.31 MHz
- 5.31 KHz
- 10.62 MHz

Consider the graph in which the birthrate and death rate of a country
Which frequency range is sensitive to human ears
log12 81 = p, then 3[(4-p)/(4+p)] is equal to
A right circular cone, of height 12 ft, stands on its base
Points E, F, G, H lie on the sides AB, BC, CD, and DA
While multiplying three real numbers, Ashok took one of the numbers
If x is a positive quantity such that 2x = 3^log5 2, then x is equal to
If u^2 + (u − 2v − 1)^2 = −4v(u + v), then what is the value of u + 3v