⟩ With a star-delta starter, the windings are brought out to a terminal box. The voltage applied to the windings at starting is
* a) VL ÷ v3
* b) VL x v3
* c) VPhase ÷ v3
* d) VPhase x v3
Answer – a
* a) VL ÷ v3
* b) VL x v3
* c) VPhase ÷ v3
* d) VPhase x v3
Answer – a
Explain why the aspect ratio of TV video display is 43 or 169? Why not it is any other?
The output of the rectifier pulsating in nature, it consists of a desired DC component of voltage and unwanted ripple components. These ripple components are removed by placing filter circuit at the output of the rectifier.Types of filters1. capacitor filter2. series inductor filter3. LC filters of following two types (a)capacitance input filter (b)inductance unput filter4.RC filters.
Why length of antenna is taken as one half of wavelength or one fourth of wavelength? Why not one eighth or one sixteenth?
On-line information system provides1. users with immediate access to all the files for interrogration2. users to do initial amendment or updation of files initially3. processing of periodically collected data in group at specific intervals4. the usage of separated and not connected data with the main computer
Consider a computer with 8M bytes of main memory and a 128K cache. The cache block size is 4K. It uses a direct mapping scheme for cache management. How many different main memory blocks can map onto a given physical cache block.1. 2048 2. 2563. 64 4. None of these
Explain what are edge triggered flip flop and level triggered flip flop? How do they differ from one another?
Do you know Q-Meter works on which principal?
The Cost of storing a bit is minimum in1. Cache 2. Register3. RAM 4. Magnetic tape
Explain why vestigial side band is used in TV Signal Transmission?
Explain why making capacity of the circuit breaker is higher than breaking capacity?