# Angles project true size only when the plane containing the angle and plane of projection are...

11 views
in Physics
Angles project true size only when the plane containing the angle and plane of projection are

(a) Aligned (b) Adjacent (c) Perpendicular (d) Parallel

## Related questions

Angle between the shear plane and work surface is known as : (A) lip angle (B) rake angle (C) cutting angle (D) shear angle

Which of the following is true regarding the band-gap energy of a semiconductor ? (A) Minimum energy required to break a covalent bond (B) On breaking of the bond, electron is generated (C) On breaking of the bond, electron-hole pair is generated (D) A & C both are true

As a network contains only independent current sources and resistors then if the values of all resistors are doubled then the values of the node voltages are   (A) will become half (B) will remain unchanged (C) will become double (D) cannot be determined unless the circuit configuration and the values of the resistors are known.

Both donor and acceptor impurities are present in the combination of (a) Phosphorous - Arsenic (b) Aluminium - Antimony (c) Boron - Gallium (d) Arsenic - Antimony

What happens to the angle between current and voltage, when a small capacitance is added in series with a highly inductive circuit?  (A) Increases (B) Remains same as earlier angle (C) Decreases (D) Becomes indeterminant

In a microwave magic-T, E plane and H plane are  a) In phase b) Out of phase c) Isolated d) 90o out of phase

In a network containing resistances and reactances the roots of the characteristic equation give for the circuit : (A) The forced response (B) The total response (C) The natural response (D) The damped response

All the rules and laws of D.C. circuit also apply to A.C. circuit containing?

The gate whose output is LOW, if and only if all the inputs are HIGH, is

lf the poles of system are lying on the imaginary axis in s-plane, then the system will be

The forces, which meet at one point, but their lines of action do not lie in a plane, are called?

The power delivered to a three-phase load can be measured by the use of 2 wattmeter only when the A. Load is balanced B. 3 -phase load is connected to the source through 3 wires C. Load is unbalanced D. 3 -phase load is connected to the source through 4 wires

Large size steam plants and nuclear plants are suitable for   (a) Intermediate loads (b) Base loads (c) Both base and peak loads (d) Peak loads

When the firing angle a of a single-phase, fully controlled rectifier feeding constant direct current into a load is 30°, the displacement power factor of the rectifier is

Two waves of the same frequency have opposite phase when the phase angle between them is?

Is it true or false that electron flow and conventional current are in opposite directions?

. ICMP  (1) messages are encapsulated in an IP header (2) reports only on errors and problems (3) is integral part of TCP (4) is integral part of UDP

Three materials X, Y and Z having relative permittivity 2.5, 3.0 and 4.0 respectively are used in a single core cable. The materials on inner most and outer most layer respectively should be (a) X and Y (b) Y and Z (c) X and Z (d) Z and X

Which of the following are true in the context of Manchester Coding Signaling ?  (A) It suppresses the DC component  (B) It suppresses the high frequency component  (C) Pulses are unit symbol wide  (D) Symbol “1” is represented by positive pulse

Structural sections such as rails, angles, I-beams are made by 1. Hot rolling 2. Hot drawing 3. Hot piercing 4. Hot extrusion

Two metallic blocks having masses in the ratio 2:3 are made to slide down a frictionless inclined plane starting from rest position. When the blocks reach the bottom of the inclined plane, they will have their kinetic energies in the ratio : (A) 2:3 (B) 3:5 (C) 3:2 (D) 7:4

When an antenna of input resistance 73 ohm is connected to a 50-ohm line and if the losses are ignored then its efficiency will be nearly   (A) 0.19 (B) 0.81 (C) 0.97 (D) 1.19

The formula to find I when the values of V and R are known is? A.I = VR B.I = R/V C.V = IR D.I = V/R

When both the inductance and resistance of a coil are doubled the value of?

AT-T connection has higher ratio of utilizax that n a V - V connection only when  1. Identical transformers are used  2. Load power factor is leading  3. Load power factor is unity  4. Non-identical transformers are used

X-rays are used for the study of crystal structure because  (a) X-rays are completely absorbed by the crystal (b) the wavelength of X-ray is of the same order of magnitude in the inter-atomic spacing in crystals (c) the wavelength of X-rays is very small in comparison with the inter-atomic spacing in crystals (d) the crystals are completely transparent to X-rays

What are the basic laws of physics?

What are the basics of physics?

The mechanism that bring a page into memory only when it is needed is called _____________  (1) Segmentation (2) Fragmentation (3) Demand Paging (4) Page Replacement

State the factors to be considered for selection of shape and size of the car of elevator.

What is the choice of size and number of generator units in interconnected power system?

Calculate the size of memory address space for a 16 bit data and 20 bit address bus. A) 1 MB B) 2 MB C) 3 MB D) 4 MB

The economic size of a conductor in transmission and distribution lines of electric power is decided by (a) Ohm’s law (b) Kelvin’s law (c) Kirchhoff’s law(d) Faraday’s law

An array of size 100 is given and the memory addressing is byte by byte. If The base address of the array is 1000 and every record consists of 40 bytes then address of array[10] will be  (1) 1040 (2) 1400 (3) 1440 (4) 1080

Regenerative breaking of ac-dc converter fed dc motor is possible when firing delay angle of SCRs is (A) 30° (B) 60° (C ) 90° (D) 120°

A single force and a couple acting in the same plane upon a rigid body?

The maximum power in a synchronous motor (for a given excitation) is produced when the power angle is equal to: (A) 0° (B) 45° (C) 60° (D) 90°

The synchronous motor will develop maximum power when the load angle is?

A material has conductivity of 10–2 mho/m and relative permittivity of 4. The frequency at which the conduction current in the medium is equal to the displacement current, is (a) 450 MHz (b) 900 MHz (c) 45 MHz (d) 90 MHz

What is the charge and mass of an electron?

In a circuit containing R, L and C, power loss can take place in?

Find the value of (sin 15o ) using compound angles.

In a three phase controlled bridge rectifier with an increase of overlap angles the output dc voltage

The power factor angle and torque angle of a salient pole synchronous generator drawing a current of 1.0 pu from a lagging load are 45o and 15o, respectively. The direct axis and quadrature axis currents, respectively, are (A) 0.5 pu, 0.866 pu (B) 0.866 pu, 0.5 pu (C) 0.707 pu, 0.707 pu (D) 0.5 pu, 0.5 pu