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A 3, 5 and 2 ohms resistance is connected in series with a 10 V battery. The voltage across the 2 ohms resistor is
- 2 V.
- 10V.
- 4 V.
Someone could explain pls?
3 3/4 + 4 2/3 =
- 7 5/12
- 7 5/7
- 8 5/12
Please write your comment here.
What is the supplement of 13 degrees 13 minutes 13 seconds?
- 166 degree 46 minutes 47 seconds.
- 167 degrees 46 minutes 47 seconds.
- 266 degrees 87 minutes 87 seconds.
somebody can explain? thanks
What is (X^2 * X^3 )^3 ?
- X^10
- X^15
- X^36
somebody can explain? thanks
A sphere with a radius of 2 cm has a surface area of
- 8pi cm^2.
- 16pi cm^2.
- 64pi cm^2.
somebody can explain? thanks
A pinion gear with 16 teeth is driving a spur gear with 48 teeth at 120 RPM. Find the speed of the pinion gear.
- 40 RPM
- 144 RPM
- 360 RPM
quite embarrassed to ask, but can someone please explain the difference between pinion and spur gears?
In an equilateral triangle, all of the angles are equal, to
- pi divided by 2.
- pi divided by 3.
- pi divided by 4.
Please explain.
Pi / 3 = 1.047198.
Starting from zero amplitude, the cosine curve repeats itself between
- -180 and 180 degree.
- -90 and 270 degrees.
- 0 and 360 degree.
What is meant by 'repeats itself'?
Thanks
The propulsive efficiency is
- low, with a low mass flow acceleration.
- high, with a low mass flow acceleration.
- high, with a high mass flow acceleration.
more mass flow is more thrust, is'nt it.?
How many turns does the secondary winding of a 2:1 step-up transformer have?
- Less than primary.
- More than primary.
- Less turns but with thicker wire.
è sbagliata?
What is the area of the trapezium shown?
- 24 cm^2
- 27 cm^2
- Area cannot be calculated from information given.
Can someone please explain?
Evaluate 2x^2 * z^2 * (3x - z^2 ) =
- 6x^2 * z^2 + 3x - z^2
- 6x^2 * z^2 - 2x^2 * z^2
- 6x^3 * z^2 - 2x^2 * z^4
Can someone please explain?
A mass on a spring nearly hits the ground 20 times a minute, its frequency is
- 3 cycles per second.
- 1/3 cycle per second.
- 20 cycles per second.
Kindly explain with formula
The oscillation produced by a pendulum 2500mm long has a periodic time of
- 6 seconds.
- 3 seconds.
- 9 seconds.
Kindly explain with formula
A lifting machine moves with an effort, a distance of 200 cm, in order to raise it 0.5 m. The Velocity Ratio is
- 8.
- 4.
- 2.
Kindly explain with formula
A drive shaft has a speed 150pi radians a second. What is the speed in RPM?
- 4500.
- 9000.
- 1500.
Kindly explain with formula
A temperature of 41 degrees Fahrenheit is, in Centigrade
- 7 degrees.
- 5 degrees.
- 9 degrees.
Kindly explain with formula
A lever of length 105 cm is used with a fulcrum placed 15 cm from the end bearing the load. Its mechanical advantage is
- 9.
- 7.
- 6.
Kindly explain with formula
If the energy supplied to a circuit for 4hrs 15 minutes at 800 j/sec what would be the energy consumed?
- 3400 KW Hrs.
- 3.4 KW Hrs.
- 340 KW Hrs.
sir how it is calculated 3.4 kw
Which number is the lowest common factor of 36, 66 and 126?
- 6
- 12
- 23
6 is highest common factor, lowest common factor 2772
A 50 microFarad capacitor is fed with a current of 25 milliAmpere. How long will it take to charge it to 100Volts?
- 1 second.
- 0.2 seconds.
- 12 minutes.
how?
What effect does lowering flaps for takeoff have?
- Reduces takeoff speeds only.
- Reduces the landing speed only.
- Reduces both takeoff and landing speeds.
How you come to know???
What principle does the delta 3 hinge use?
- Triangular pitch lever.
- Flapping actuators.
- Offset hinges.
I have no idea...
The power required at low altitude for a given IAS is
- unchanged with altitude.
- higher.
- lower.
Please explain. There is more drag at low altitude. Is it because of less quantity of oxygen at higher altitude?
Where would you find the normal axis?
- Through C of G at right angles to longitudinal and lateral axis.
- Vertically through the centre of pressure at right angles to the chord line.
- In line with the wing tips, passing through the C of G horizontally.
Why?