Mock Test: SSC JE (ME)- 15 - Mechanical Engineering MCQ

In the following type of conductors the corona is minimum in

Consider the following w.r.t. the circuit as shown below

1. V_R 100√ 2V=
2. | I |rms = 2A
3. L = 0.25H
Which of the above statements is/are correct?

If the time delay of relay with TMS setting 0.1 is 10 second then what is the time delay whenthe TMS setting is changed to 0.5

The machine used in wind will is

In an RLC series resonant circuit, if the maximum stored energy is increased by 10%and at the same time, the energy dissipated per cycle is reduced by 10%, it will result in whichone of the following ?

Consider the following components Out of these components, which component(s)can be common for primary & back up protection

In a series resonance circuit, at resonance selectivity Q is equal to

Positive sequence terminal voltage is zero in

.Most economical load in the underground cable is

The friction experienced by a body, when in motion, is known as

certain network consist of a large number of ideal linear resistances, one of which is
designated consumed by R is P1 when only the first source is active, and P2 when only the
second source is active, if both source are active simultaneously, then the power consumed by R
is
 

Consider the following statement about D'Arsonval Movement
1. It is best suited for d.c. current measurement
2. It responds to the average value of current
3. It could be used for power measurements Which of these statements is/are correct
 

Torque/weight ratio of an instrument indicates

A current transformer has a phase error of +3º. The phase angle between the primary andsecondary current is

 The direction of rotation of a d.c. series motorcan be reversed

A three phase transformer having zero sequence impedance of Zo has the zero-sequencenetwork as shown in the figure below. The connection of its windings are

The transformer laminations are insulated from each other by

A coil with certain number of turns has a specified time constant. If the no. of turns isdoubled, its time constant would

The technique of adding a precise amount of time between the trigger point and the beginningof the scope-sweep in a CRO is known as

In a CE (common emitter) transistor, V_CC = 12V and the zero signal collector current is 1mA. Determine the operating point when collector load (R_C) is 6 KW

A 100 H.P. motor with a synchronous speed of 720 rpm at 50 Hz has 96 stator slots with4 conductors per slot and 120 rotor slots with 2 conductors per slot. If the full load efficiencyis 0.92 and the p.f. is 0.9 lagging, the current per phase when the stator is star connected to3-phase, 500V supply will be

Which of the following application requires high starting torque ?

Which DC motor will be preferred for machine tools ?

The empty space between the plates of a capacitor is filled with liquid of dielectricconstant K the capacitance of capacitor

If current through the operating coil of a moving iron instrument is doubled, the operating forcebecomes

A magnetic needle is kept in a uniform magnetic field. It experiences

Disadvantage of low p.f. is